Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Restricted Stock (Details)

v3.19.2
Stockholders' Equity - Restricted Stock (Details) - Restricted Stock [Member]
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Units, Nonvested Beginning Balance | shares 2,932,106
Number of Units, Granted | shares 781,652
Number of Units, Forfeited | shares (21,000)
Number of Units, Vested | shares (180,626)
Number of Units, Nonvested Ending Balance | shares 3,512,132
Weighted Average Exercise Price, Nonvested Beginning Balance | $ / shares $ 4.22
Weighted Average Grant Date Fair Value, Granted | $ / shares 3.35
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 3.16
Weighted Average Grant Date Fair Value, Vested | $ / shares 1.06
Weighted Average Exercise Price, Nonvested Ending Balance | $ / shares $ 4.34