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Condensed Consolidated Statements Stockholders Equity (Unaudited) - USD ($) $ in Thousands | Total | Voting Common Stock | Additional Paid-in Capital | Treasury Stock | AOCI Attributable to Parent | Accumulated Deficit
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 |  | 53,266,472 |  | 3,006,448 |  |
Beginning balance at Dec. 31, 2020 | $ 152,099 | $ 5 | $ 328,343 | $ (29,206) |  | $ (147,043)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Exercise of stock options (in shares) |  | 55,500 |  |  |  |
Exercise of stock options | 29 |  | 29 |  |  |
Stock-based compensation expense | 9,353 |  | 9,353 |  |  |
Issuance of common stock from equity award settlement (in shares) |  | 482,302 |  |  |  |
Issuance of common stock from equity award settlement | 0 |  |  |  |  |
Taxes paid related to net share settlement of equity awards (in shares) |  |  |  | 16,291 |  |
Taxes paid related to net share settlement of equity awards | (1,174) |  |  | $ (1,174) |  |
Proceeds from disgorgement of stockholder short-swing profits | 1,664 |  | 1,664 |  |  |
Net loss | (11,809) |  |  |  |  | (11,809)
Ending balance (in shares) at Jun. 30, 2021 |  | 53,804,274 |  | 3,022,739 |  |
Ending balance at Jun. 30, 2021 | 150,162 | $ 5 | 339,389 | $ (30,380) |  | (158,852)
Beginning balance (in shares) at Mar. 31, 2021 |  | 53,543,383 |  | 3,019,078 |  |
Beginning balance at Mar. 31, 2021 | 150,409 | $ 5 | 333,939 | $ (30,125) |  | (153,410)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Exercise of stock options (in shares) |  | 20,000 |  |  |  |
Exercise of stock options | 6 |  | 6 |  |  |
Stock-based compensation expense | 5,444 |  | 5,444 |  |  |
Issuance of common stock from equity award settlement (in shares) |  | 240,891 |  |  |  |
Issuance of common stock from equity award settlement | 0 |  |  |  |  |
Taxes paid related to net share settlement of equity awards (in shares) |  |  |  | 3,661 |  |
Taxes paid related to net share settlement of equity awards | (255) |  |  | $ (255) |  |
Net loss | (5,442) |  |  |  |  | (5,442)
Ending balance (in shares) at Jun. 30, 2021 |  | 53,804,274 |  | 3,022,739 |  |
Ending balance at Jun. 30, 2021 | 150,162 | $ 5 | 339,389 | $ (30,380) |  | (158,852)
Beginning balance (in shares) at Dec. 31, 2021 |  | 54,153,771 |  | 3,026,400 |  |
Beginning balance at Dec. 31, 2021 | 145,210 | $ 5 | 351,774 | $ (30,824) |  | (175,745)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Exercise of stock options (in shares) |  | 38,545 |  |  |  |
Exercise of stock options | 14 |  | 14 |  |  |
Stock-based compensation expense | 21,056 |  | 21,056 |  |  |
Issuance of common stock from equity award settlement (in shares) |  | 427,695 |  |  |  |
Issuance of common stock from equity award settlement | 0 |  |  |  |  |
Taxes paid related to net share settlement of equity awards (in shares) |  |  |  | 19,162 |  |
Taxes paid related to net share settlement of equity awards | (1,213) |  |  | $ (1,213) |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan | 675 |  | 675 |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans |  | 13,669 |  |  |  |
Proceeds from disgorgement of stockholder short-swing profits | 0 |  |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (314) |  |  |  | $ (314) |
Net loss | (24,365) |  |  |  |  | (24,365)
Ending balance (in shares) at Jun. 30, 2022 |  | 54,633,680 |  | 3,045,562 |  |
Ending balance at Jun. 30, 2022 | $ 141,063 | $ 5 | 373,519 | $ (32,037) | (314) | (200,110)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Document Period End Date | Jun. 30, 2022 |  |  |  |  |
Beginning balance (in shares) at Mar. 31, 2022 |  | 54,407,191 |  | 3,040,265 |  |
Beginning balance at Mar. 31, 2022 | $ 142,754 | $ 5 | 360,172 | $ (31,763) | (160) | (185,500)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Exercise of stock options (in shares) |  | 25,000 |  |  |  |
Exercise of stock options | 8 |  | 8 |  |  |
Stock-based compensation expense | 12,664 |  | 12,664 |  |  |
Issuance of common stock from equity award settlement (in shares) |  | 187,820 |  |  |  |
Issuance of common stock from equity award settlement | 0 |  |  |  |  |
Taxes paid related to net share settlement of equity awards (in shares) |  |  |  | 5,297 |  |
Taxes paid related to net share settlement of equity awards | (274) |  |  | $ (274) |  |
Stock Issued During Period, Value, Employee Stock Purchase Plan | 675 |  | 675 |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans |  | 13,669 |  |  |  |
Other Comprehensive Income (Loss), Net of Tax | (154) |  |  |  | (154) |
Net loss | (14,610) |  |  |  |  | (14,610)
Ending balance (in shares) at Jun. 30, 2022 |  | 54,633,680 |  | 3,045,562 |  |
Ending balance at Jun. 30, 2022 | $ 141,063 | $ 5 | $ 373,519 | $ (32,037) | $ (314) | $ (200,110)

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