Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Summary of Stock Options (Details)

v3.20.1
Stockholders' Equity - Summary of Stock Options (Details) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Equity [Abstract]    
Number of Options, Beginning Balance 1,466,520 112,193
Number of Options, Granted 275,000 1,362,500
Number of Options, Expired (9,775) (8,173)
Number of Options, Ending Balance 1,731,745 1,466,520
Number of Options Vested and Expected to Vest 1,731,745 1,466,520
Number of Options Vested and Exercisable 1,594,245 783,013
Weighted Average Exercise Price, Beginning Balance $ 6.66 $ 62.00
Weighted Average Exercise Price, Granted 2.04 2.32
Weighted Average Exercise Price, Expired 82.05 42.84
Weighted Average Exercise Price, Ending Balance 5.50 6.66
Weighted Average Exercise Price, Options vested and expected to vest 5.50 6.66
Weighted Average Exercise Price, Options vested and exercisable $ 5.80 $ 10.32
Weighted Average Remaining Contractual Life (in years), Beginning Balance 9 years 5 months 27 days 6 years 2 months 23 days
Weighted Average Remaining Contractual Life (in years), Granted 4 years 9 months 22 days 9 years 9 months 11 days
Weighted Average Remaining Contractual Life (in years), Expired 0 years 0 years
Weighted Average Remaining Contractual Life (in years), Ending Balance 7 years 11 months 1 day 9 years 5 months 27 days
Weighted Average Remaining Contractual Life (in years), Options vested and expected to vest 7 years 11 months 1 day 9 years 5 months 27 days
Weighted Average Remaining Contractual Life (in years), Options vested and exercisable 8 years 2 months 16 days 9 years 2 months 30 days