Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock Options (Details)

v3.20.1
Stockholders' Equity - Summary of Stock Options (Details)
3 Months Ended
Mar. 31, 2020
$ / shares
shares
Equity [Abstract]  
Number of Options, Beginning Balance | shares 1,731,745
Number of Options, Expired | shares (4,063)
Number of Options, Ending Balance | shares 1,727,682
Number of Options Vested and Expected to Vest | shares 1,727,682
Number of Options Vested and Exercisable | shares 1,658,932
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 5.50
Weighted Average Exercise Price, Expired | $ / shares 110.67
Weighted Average Exercise Price, Ending Balance | $ / shares 5.25
Weighted Average Exercise Price, Options vested and expected to vest | $ / shares 5.25
Weighted Average Exercise Price, Options vested and exercisable | $ / shares $ 5.39
Weighted Average Remaining Contractual Life (in years), Beginning Balance 7 years 11 months 1 day
Weighted Average Remaining Contractual Life (in years), Expired 0 years
Weighted Average Remaining Contractual Life (in years), Ending Balance 7 years 8 months 9 days
Weighted Average Remaining Contractual Life (in years), Options vested and expected to vest 7 years 8 months 9 days
Weighted Average Remaining Contractual Life (in years), Options vested and exercisable 7 years 9 months 29 days