STOCKHOLDERS' EQUITY (Details Narrative)

XML 55 R44.htm IDEA: XBRL DOCUMENT v3.3.1.900

STOCKHOLDERS' EQUITY (Details Narrative)																													1 Months Ended		3 Months Ended							6 Months Ended	7 Months Ended	12 Months Ended
	Dec. 09, 2015 USD ($) $ / shares shares	Nov. 04, 2015 USD ($) $ / shares shares	Oct. 20, 2015 shares	Oct. 14, 2015 installment shares	Sep. 21, 2015 USD ($) $ / shares shares	Mar. 13, 2015 shares	Jan. 29, 2015 shares	Dec. 22, 2014 $ / shares	Oct. 06, 2014 shares	Sep. 30, 2014 USD ($) $ / shares shares	Sep. 19, 2014 USD ($) $ / shares shares	Sep. 16, 2014 USD ($) item shares	Jul. 18, 2014 shares	Jun. 30, 2014 USD ($) $ / shares shares	Jun. 02, 2014 shares	May. 02, 2014 USD ($) shares	Apr. 22, 2014 USD ($) $ / shares	Nov. 13, 2013 USD ($) shares	Nov. 12, 2013 USD ($) shares	Jul. 29, 2013 USD ($) $ / shares shares	Jul. 25, 2013 USD ($) $ / shares shares	Jun. 28, 2013 USD ($) item $ / shares shares	Jun. 24, 2013	Jun. 11, 2013 USD ($) $ / shares shares	May. 31, 2013 USD ($) $ / shares item shares	May. 22, 2013 USD ($) $ / shares shares	Apr. 17, 2013 USD ($) $ / shares shares	Oct. 01, 2012	Aug. 31, 2013 USD ($) $ / shares shares	Jun. 30, 2013 USD ($) $ / shares shares	Sep. 30, 2015 shares	Jun. 30, 2015 shares	Mar. 31, 2015 shares	Dec. 31, 2014 $ / shares shares	Sep. 30, 2014 $ / shares shares	Sep. 30, 2013 USD ($) $ / shares shares	Jun. 30, 2013 $ / shares	Dec. 31, 2013 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Sep. 17, 2015 payment	Apr. 07, 2015 period	Sep. 17, 2014 shares	Apr. 15, 2014 period	Jul. 18, 2013 $ / shares	Apr. 30, 2013 USD ($) $ / shares shares	Dec. 07, 2011 $ / shares shares	Dec. 06, 2011 $ / shares shares
Common stock, shares authorized																																		200,000,000						200,000,000	200,000,000							200,000,000	75,000,000
Common stock, par value | $ / shares																																		$ 0.0001						$ 0.0001	$ 0.0001					$ 0.0001		$ 0.0001	$ 0.001
Preferred stock, shares authorized																																																100,000,000
Preferred stock, par value | $ / shares																																																$ 0.0001
Stock issued for warrants exercised (in shares)																																	5,000	29,230
Warrant price | $ / shares								$ 3.75
Preferred Stock, Dividend Rate, Percentage								200.00%
Common stock issued in acquisition | $																		$ 718,500																							$ 2,078,800
Number of monthly installments | period																																											12		12
Fair market value of restricted shares issued | $																	$ 718,500
Value of stock issued for services | $																																								$ 900,500
Vesting period (in months)												12 months															12 months
Common Stock Subscription Units																				11,392					1,999,996				307,692																		4,808
Common Stock Subscription Units, Gross Proceeds | $																				$ 29,620					$ 5,200,000				$ 800,000																		$ 25,000
Common Stock Subscription Units, Price Per Unit | $ / shares																				2.60					2.60				2.60																		5.20
Common Stock Subscription Units, Common Shares																				1					1				1																		2
Common Stock Subscription Units, Term Of Warrant																				3 years					3 years				3 years								5 years
Common Stock Subscription Units, Number of Securities Called by Each Warrant																				0.5					0.5				0.5
Common Stock Subscription Units, Warrant Exercise Price | $ / shares																				3.25					3.25				3.25																		3.90
Consulting Agreement Term																						1 year				1 year	12 months
Number of consultants | item																						2
Retainage Deposit | $																									$ 30,000		$ 5,000
Maximum beneficial ownership percentage																									9.99%
Timeframe to file registration statement																									45 days
Percentage of purchase price																									1.00%
Placement agent fees | $																									$ 170,000
Number Of Broker-Dealers | item																									2
Granted				385,000
Exercise stock options (in shares)																																		29,230
Payments of Stock Issuance Costs | $																													$ 35,029
Legal Fees | $																													$ 42,375
Cost of Services, Amortization | $																																						$ 153,128	$ 78,750
Prepaid Expense
Value of stock issued for services | $																										$ 135,000
Cost of Services | $																						$ 306,256
Vest Immediately
Stock issued for services (in shares)																											15,384
Vest Over Twelve Months
Stock issued for services (in shares)																											46,154
Common Stock
Reverse stock split ratio (as a percent)																							.07692					1.5
Common Stock Dividend Ratio (as a percent)								1
Stock issued for warrants exercised (in shares)																																	5,000
Stock issued (in shares)																			9,616								923,076
Fair value on grant date (in dollars per share) | $ / shares																											$ 2.47
Common stock issued in acquisition | $																											$ 2,280,000														$ 19
Value of stock issued for services | $		$ 513,000			$ 334,500						$ 818,000										$ 30,000	$ 306,251								$ 58,000						$ 34,480				$ 21
Stock issued for services (in shares)		300,000			150,000	60,000					60,000										8,760	134,616				46,154	61,538			23,076						11,538				210,000
Shares issued, value per share | $ / shares		$ 1.71			$ 2.23						$ 13.63										$ 3.425	$ 2.275				$ 2.925				$ 2.515						$ 3.00	$ 2.515
Proceeds from Issuance of Common Stock | $																			$ 25,000
Common stock issued							134,409								48,078
Exercise stock options (in shares)													26,722																			33,968			84,652
Restricted Stock [Member]
Restricted shares issued (in shares)										50,000				200,000
Shares issued, value per share | $ / shares										$ 5.62				$ 4.90																					$ 5.62
Fair value of restricted issuance | $										$ 281,000				$ 980,000
Restricted Stock [Member] | Common Stock
Restricted shares issued (in shares)																		300,000
Shares issued, value per share | $ / shares																	$ 2.395
Chief Financial Officer and Director | Restricted Stock [Member] | Common Stock
Granted																								192,308
Fair market value of restricted stock award (in dollars per share) | $ / shares																								$ 2.635
Aggregate value of restricted stock award | $																								$ 506,250
Stock compensation expense | $																								$ 506,250
Director
Common stock issued in acquisition | $												$ 45,995
Vesting period (in months)												12 months
Number of Board Members | item												2
Director | Restricted Stock [Member]
Granted												6,178
Director | Restricted Stock [Member] | Common Stock
Aggregate value of restricted stock award | $										$ 45,995
Consultants
Number of monthly installments | installment				24
Series A preferred stock
Preferred stock, shares authorized																																		50,000,000						50,000,000	50,000,000
Preferred stock, par value | $ / shares																																		$ 0.0001						$ 0.0001	$ 0.0001
Series B preferred stock
Preferred stock, shares authorized																																		50,000,000						50,000,000	50,000,000
Preferred stock, par value | $ / shares																																		$ 0.0001						$ 0.0001	$ 0.0001
Stock issued (in shares)																782,000
Common stock issued in acquisition | $																$ 2,807,380
Preferred Stock converted to Common Stock			16,666
Series B preferred stock | GRQ
Stock issued (in shares)																																								50,000
Common stock issued in acquisition | $																																								$ 345,334
Preferred shares agreement																																												200,000
Percent vested upon execution of the GRQ Consulting Agreement																																												50.00%
Percent vested after execution																																												50.00%
Number of monthly installments | payment																																										6
Restricted shares issued (in shares)									100,000																																150,000
Value of stock issued for services | $																																									$ 1,103,581
Preferred Stock converted to Common Stock																															183,330
Common Stock
Stock issued (in shares)	100,000		16,666															150,000
Fair value on grant date (in dollars per share) | $ / shares	$ 1.61
Common stock issued in acquisition | $	$ 161,000
Exercise stock options (in shares)																																33,968			84,652

X

- Definition Represents the maximum ownership percentage that can exist before stock warrants are limited. + References No definition available. + Details Name: mara_BeneficialOwnershipPercentageLimit Namespace Prefix: mara_ Data Type: num:percentItemType Balance Type: na Period Type: duration

X

- Definition Represents the ratio used in the calculation of common stock dividend. + References No definition available. + Details Name: mara_CommonStockDividendRatio Namespace Prefix: mara_ Data Type: xbrli:pureItemType Balance Type: na Period Type: instant

X

- Definition Represents the number of Common Stock Subscription Units where each unit consists of: (1) a designated number of shares of the Company's Common Stock, and (2) a designated number of warrants to purchase an additional share of Common Stock, subject to adjustment upon the occurrence of certain events such as stock splits and dividends. The number of Common Stock shares and Warrants for each unit is determined at the time of the sale. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnits Namespace Prefix: mara_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition Represents the number of securities into which each warrant from a Common Stock Unit may be converted. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight Namespace Prefix: mara_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition Represents the number of Common Stock shares included in each Common Stock Subscription Unit + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsCommonShares Namespace Prefix: mara_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition Represents the aggregate cash inflow from the sale of common stock subscription units. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsGrossProceeds Namespace Prefix: mara_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Represents the per unit amount received by the Company for each Common Stock Subscription Unit sold. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsPricePerUnit Namespace Prefix: mara_ Data Type: xbrli:decimalItemType Balance Type: na Period Type: instant

X

- Definition Represents the term of the warrant included in each Common Stock Subscription Unit. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsTermOfWarrant Namespace Prefix: mara_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Represents the exercise price of the warrant included in each Common Stock Subscription Unit. + References No definition available. + Details Name: mara_CommonStockSubscriptionUnitsWarrantExcercisePrice Namespace Prefix: mara_ Data Type: xbrli:decimalItemType Balance Type: na Period Type: instant

X

- Definition Represents the period of the consulting agreement is effective, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details Name: mara_ConsultingAgreementTerm Namespace Prefix: mara_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Number of members. + References No definition available. + Details Name: mara_NumberOfBoardMembers Namespace Prefix: mara_ Data Type: xbrli:integerItemType Balance Type: na Period Type: instant

X

- Definition Represents the number of broker-dealers + References No definition available. + Details Name: mara_NumberOfBrokerDealers Namespace Prefix: mara_ Data Type: xbrli:integerItemType Balance Type: na Period Type: duration

X

- Definition Represents the number of consultants. + References No definition available. + Details Name: mara_NumberOfConsultants Namespace Prefix: mara_ Data Type: xbrli:integerItemType Balance Type: na Period Type: duration

X

- Definition Represents the percentage of the investor's purchase price that must be paid every 30 days if the registration statement is not filed as agreed upon. + References No definition available. + Details Name: mara_PercentageOfPurchasePrice Namespace Prefix: mara_ Data Type: num:percentItemType Balance Type: na Period Type: duration

X

- Definition Represents the time frame that the Company has agreed to file a resale registration agreement and to have it effective within 120days of the filing date or 135 days of the filing date if the statement is subject to full review. + References No definition available. + Details Name: mara_ResaleRegistrationStatementFilingDeadline Namespace Prefix: mara_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Number of monthly installments from grant date over which an equity-based award is paid. + References No definition available. + Details Name: mara_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfMonthlyInstallments Namespace Prefix: mara_ Data Type: xbrli:integerItemType Balance Type: na Period Type: instant

X

- Definition Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage vested after execution of an agreement. + References No definition available. + Details Name: mara_Sharebasedcompensationarrangementbysharebasedpaymentawardawardvestingpercentageafterexecution Namespace Prefix: mara_ Data Type: num:percentItemType Balance Type: na Period Type: instant

X

- Definition Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage vested upon execution of an agreement. + References No definition available. + Details Name: mara_Sharebasedcompensationarrangementbysharebasedpaymentawardawardvestingpercentageuponexecution Namespace Prefix: mara_ Data Type: num:percentItemType Balance Type: na Period Type: instant

X

- Definition Represents stock issued for warrants exercised. + References No definition available. + Details Name: mara_StockIssuedForWarrantsExercisedInShares Namespace Prefix: mara_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details Name: us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details Name: us-gaap_BusinessAcquisitionSharePrice Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details Name: us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details Name: us-gaap_CommonStockParOrStatedValuePerShare Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details Name: us-gaap_CommonStockSharesAuthorized Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 + Details Name: us-gaap_ConversionOfStockSharesConverted1 Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Total costs related to services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details Name: us-gaap_CostOfServices Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition The amount of expense recognized in the current period that reflects the allocation of the costs of intangible assets over the expected benefit period of such assets. This element applies only to intangible assets used in the delivery of services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details Name: us-gaap_CostOfServicesAmortization Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (1) acting as an agent for fiduciary placement and loans and (2) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13 (a)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details Name: us-gaap_FeesAndCommissionsFiduciaryAndTrustActivities Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details Name: us-gaap_LegalFees Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details Name: us-gaap_PaymentsOfStockIssuanceCosts Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The percentage rate used to calculate dividend payments on preferred stock. + References No definition available. + Details Name: us-gaap_PreferredStockDividendRatePercentage Namespace Prefix: us-gaap_ Data Type: num:percentItemType Balance Type: na Period Type: duration

X

- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details Name: us-gaap_PreferredStockParOrStatedValuePerShare Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition The number of nonredeemable preferred stock (shares) (or preferred stock redeemable solely at the option of the issuer) allocated to investors to buy shares of a new issue of preferred stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details Name: us-gaap_PreferredStockShareSubscriptions Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details Name: us-gaap_PreferredStockSharesAuthorized Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: instant

X

- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 + Details Name: us-gaap_ProceedsFromIssuanceOfCommonStock Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition The value of restricted shares issued as compensation, net of the value of shares for the payment of withholding taxes. This element is to be used only if shares are used in lieu of cash to satisfy all or a portion of withholding taxes. + References No definition available. + Details Name: us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition The amount of assets, typically cash, provided to suppliers of goods in advance of receipt and acceptance, or services (such as research facilities, lawyers or consultants), which is held by such parties until the entity either effects full payment (including applying the retainer) or obtains release from liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details Name: us-gaap_RetainageDeposit Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: instant

X

- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Namespace Prefix: us-gaap_ Data Type: xbrli:durationItemType Balance Type: na Period Type: duration

X

- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References No definition available. + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition Net number of non-option equity instruments granted to participants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details Name: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Amount of capitalized and expensed compensation cost from equity-based compensation arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details Name: us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1 Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: debit Period Type: duration

X

- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details Name: us-gaap_SharesIssuedPricePerShare Namespace Prefix: us-gaap_ Data Type: num:perShareItemType Balance Type: na Period Type: instant

X

- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. + References No definition available. + Details Name: us-gaap_StockIssuedDuringPeriodSharesIssuedForServices Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details Name: us-gaap_StockIssuedDuringPeriodSharesNewIssues Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details Name: us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details Name: us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised Namespace Prefix: us-gaap_ Data Type: xbrli:sharesItemType Balance Type: na Period Type: duration

X

- Definition Value of stock issued pursuant to acquisitions during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details Name: us-gaap_StockIssuedDuringPeriodValueAcquisitions Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders. + References No definition available. + Details Name: us-gaap_StockIssuedDuringPeriodValueIssuedForServices Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Aggregate value of stock related to Restricted Stock Awards issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details Name: us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details Name: us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures Namespace Prefix: us-gaap_ Data Type: xbrli:monetaryItemType Balance Type: credit Period Type: duration

X

- Definition Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C + Details Name: us-gaap_StockholdersEquityReverseStockSplit Namespace Prefix: us-gaap_ Data Type: xbrli:stringItemType Balance Type: na Period Type: duration

X

- Details Name: us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementScenarioAxis=mara_VestImmediatelyMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementScenarioAxis=mara_VestOverTwelveMonthsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_TitleOfIndividualAxis=mara_ChiefFinancialOfficerAndDirectorMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_TitleOfIndividualAxis=us-gaap_DirectorMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_TitleOfIndividualAxis=mara_ConsultantsMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementClassOfStockAxis=us-gaap_SeriesBPreferredStockMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_CounterpartyNameAxis=mara_GRQMember Namespace Prefix: Data Type: na Balance Type: Period Type:

X

- Details Name: us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember Namespace Prefix: Data Type: na Balance Type: Period Type: