CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings |
Beginning balance, shares at Dec. 31, 2017 | | 90,513 | | |
Beginning balance, value at Dec. 31, 2017 | $ 16,381 | $ 9 | $ 51,400 | $ (35,028) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Stock-based compensation | 1,036 | | 1,036 | |
Net income (loss) | 619 | | | 619 |
Ending balance, shares at Mar. 31, 2018 | | 90,513 | | |
Ending balance, value at Mar. 31, 2018 | 18,036 | $ 9 | 52,436 | (34,409) |
Beginning balance, shares at Dec. 31, 2017 | | 90,513 | | |
Beginning balance, value at Dec. 31, 2017 | 16,381 | $ 9 | 51,400 | (35,028) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income (loss) | 7,100 | | | |
Ending balance, shares at Sep. 30, 2018 | | 94,355 | | |
Ending balance, value at Sep. 30, 2018 | 25,754 | $ 9 | 53,673 | (27,928) |
Beginning balance, shares at Mar. 31, 2018 | | 90,513 | | |
Beginning balance, value at Mar. 31, 2018 | 18,036 | $ 9 | 52,436 | (34,409) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Issuance of stock for professional services (shares) | | 150 | | |
Issuance of stock for professional services | 62 | | 62 | |
Exercise of stock options (shares) | | 283 | | |
Exercise of stock options | 108 | | 108 | |
Stock-based compensation | 360 | | 360 | |
Net income (loss) | 3,186 | | | 3,186 |
Ending balance, shares at Jun. 30, 2018 | | 90,946 | | |
Ending balance, value at Jun. 30, 2018 | 21,752 | $ 9 | 52,966 | (31,223) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Issuance of stock for professional services (shares) | | 75 | | |
Issuance of stock for professional services | 233 | | 233 | |
Exercise of stock options (shares) | | 711 | | |
Exercise of stock options | 236 | | 236 | |
Issuance of common stock from exercise of warrants on a net issuance basis (shares) | | 2,623 | | |
Stock-based compensation | 238 | | 238 | |
Net income (loss) | 3,295 | | | 3,295 |
Ending balance, shares at Sep. 30, 2018 | | 94,355 | | |
Ending balance, value at Sep. 30, 2018 | 25,754 | $ 9 | 53,673 | (27,928) |
Beginning balance, shares at Dec. 31, 2018 | | 94,940 | | |
Beginning balance, value at Dec. 31, 2018 | 30,116 | $ 9 | 55,134 | (25,027) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Issuance of common stock under employee benefit plan (shares) | | 3,539 | | |
Issuance of common stock under employee benefit plan | 197 | $ 1 | 196 | |
Stock-based compensation | 2,091 | | 2,091 | |
Stock-based compensation associated with employment settlement | 7,857 | | 7,857 | |
Net income (loss) | (9,384) | | | (9,384) |
Ending balance, shares at Mar. 31, 2019 | | 98,479 | | |
Ending balance, value at Mar. 31, 2019 | 30,877 | $ 10 | 65,278 | (34,411) |
Beginning balance, shares at Dec. 31, 2018 | | 94,940 | | |
Beginning balance, value at Dec. 31, 2018 | 30,116 | $ 9 | 55,134 | (25,027) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income (loss) | (9,924) | | | |
Ending balance, shares at Sep. 30, 2019 | | 98,767 | | |
Ending balance, value at Sep. 30, 2019 | 33,243 | $ 10 | 68,184 | (34,951) |
Beginning balance, shares at Mar. 31, 2019 | | 98,479 | | |
Beginning balance, value at Mar. 31, 2019 | 30,877 | $ 10 | 65,278 | (34,411) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Issuance of common stock under employee benefit plan (shares) | | 225 | | |
Issuance of common stock under employee benefit plan | 57 | | 57 | |
Stock-based compensation | 2,125 | | 2,125 | |
Net income (loss) | 1,229 | | | 1,229 |
Ending balance, shares at Jun. 30, 2019 | | 98,704 | | |
Ending balance, value at Jun. 30, 2019 | 34,288 | $ 10 | 67,460 | (33,182) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Issuance of common stock under employee benefit plan (shares) | | 63 | | |
Issuance of common stock under employee benefit plan | 25 | | 25 | |
Stock-based compensation | 699 | | 699 | |
Net income (loss) | (1,769) | | | (1,769) |
Ending balance, shares at Sep. 30, 2019 | | 98,767 | | |
Ending balance, value at Sep. 30, 2019 | $ 33,243 | $ 10 | $ 68,184 | $ (34,951) |