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v3.19.1

Consolidated Statements Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | AOCI Attributable to Parent [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 984 | $ 714,869 | $ (243) | $ (631,843) | $ 83,767
Impact to retained earnings from adoption of new standard at Dec. 31, 2017 |  |  |  | 1,126 | 1,126
Net loss |  |  |  | (25,777) | (25,777)
Other comprehensive income |  |  | (233) |  | (233)
Exercise of stock options | 2 | 79 |  |  | 81
Employee stock purchase plan sales | 1 | 186 |  |  | 187
Stock-based compensation expense |  | 2,903 |  |  | 2,903
Balance at Mar. 31, 2018 | 987 | 718,037 | (476) | (656,494) | 62,054
Balance at Dec. 31, 2018 | 1,101 | 780,400 | (297) | (731,969) | 49,235
Impact to retained earnings from adoption of new standard at Dec. 31, 2018 |  |  |  | 238 | 238
Net loss |  |  |  | (31,054) | (31,054)
Other comprehensive income |  |  | 208 |  | 208
Exercise of stock options | 2 | 341 |  |  | 343
Employee stock purchase plan sales |  | 220 |  |  | 220
Stock-based compensation expense |  | 3,317 |  |  | 3,317
Balance at Mar. 31, 2019 | $ 1,103 | $ 784,278 | $ (89) | $ (762,785) | $ 22,507

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