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v3.21.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common stock | Additional paid-in capital | Accumulated other comprehensive loss | Accumulated deficit
--- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2019 |  | 38,084 |  |  |
Beginning balance at Dec. 31, 2019 | $ 216,608 | $ 15 | $ 336,732 | $ (2,685) | $ (117,454)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net loss | (7,475) |  |  |  | (7,475)
Issuance of common stock pursuant to exercise of stock options (in shares) |  | 373 |  |  |
Issuance of common stock pursuant to exercise of stock options | 558 |  | 558 |  |
Issuance of common stock pursuant to vesting of restricted stock awards and units, net of stock withheld for tax (in shares) |  | 16 |  |  |
Issuance of common stock pursuant to vesting of restricted stock awards and units, net of stock withheld for tax | (11) |  | (11) |  |
Stock-based compensation | 3,763 |  | 3,763 |  |
Cumulative translation adjustment, net of tax | (496) |  |  | (496) |
Ending balance (in shares) at Mar. 31, 2020 |  | 38,473 |  |  |
Ending balance at Mar. 31, 2020 | $ 212,947 | $ 15 | 341,042 | (3,181) | (124,929)
Beginning balance (in shares) at Dec. 31, 2020 | 39,793 | 39,793 |  |  |
Beginning balance at Dec. 31, 2020 | $ 219,914 | $ 15 | 358,544 | (259) | (138,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net loss | (6,149) |  |  |  | (6,149)
Proceeds from follow-on offering, net of offering costs (in shares) |  | 2,537 |  |  |
Proceeds from follow-on offering, net of offering costs | $ 82,355 |  | 82,355 |  |
Issuance of common stock pursuant to exercise of stock options (in shares) | 452 | 452 |  |  |
Issuance of common stock pursuant to exercise of stock options | $ 574 |  | 574 |  |
Issuance of common stock pursuant to vesting of restricted stock awards and units, net of stock withheld for tax (in shares) |  | 1 |  |  |
Issuance of common stock pursuant to vesting of restricted stock awards and units, net of stock withheld for tax | (31) |  | (31) |  |
Stock-based compensation | 8,054 |  | 8,054 |  |
Cumulative translation adjustment, net of tax | $ (662) |  |  | (662) |
Ending balance (in shares) at Mar. 31, 2021 | 42,783 | 42,783 |  |  |
Ending balance at Mar. 31, 2021 | $ 304,055 | $ 15 | $ 449,496 | $ (921) | $ (144,535)

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