Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) - Summary of Stock Options and Changes During the Period (Details)

v3.8.0.1
Stockholders' Equity (Deficit) - Summary of Stock Options and Changes During the Period (Details) - Stock Options [Member] - $ / shares
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Number of Options, Beginning Balance 879,034 845,817
Number of Options, Granted 195,000
Number of Options, Cancelled (93,464)
Number of Options, Forfeited (430,263) (68,319)
Number of Options, Exercised
Number of Options, Ending Balance 448,771 879,034
Number of Options Exercisable 433,667  
Number of Options expected to vest 15,104  
Weighted Average Exercise Price, Beginning Balance $ 17.84 $ 17.00
Weighted Average Exercise Price, Granted 8.52
Weighted Average Exercise Price, Cancelled 23.20
Weighted Average Exercise Price, Forfeited 13.13 20.96
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Ending Balance 15.50 $ 17.84
Weighted Average Exercise Price, Options Exercisable 15.52  
Weighted Average Exercise Price, Options expected to vest $ 14.56  
Weighted Average Remaining Life, Beginning Balance 6 years 9 months 14 days 7 years 1 month 7 days
Weighted Average Remaining Life, Granted   9 years 5 months 7 days
Weighted Average Remaining Life, Ending Balance 6 years 2 months 23 days 6 years 9 months 14 days
Weighted Average Remaining Life, Options Exercisable 6 years 1 month 27 days  
Weighted Average Remaining Life, Options expected to vest 8 years 2 months 5 days