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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Treasury - Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2020 |  | 40,103 |  |  |  |
Beginning balance at Dec. 31, 2020 | $ 257,340 | $ 40 | $ (5,030) | $ 98,819 | $ 173,731 | $ (10,220)
Beginning balance, treasury stock, at cost (in shares) at Dec. 31, 2020 |  |  | 250 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net loss | (30,584) |  |  |  | (30,584) |
Foreign currency translation adjustment, net of tax | (2,971) |  |  |  | 26 | (2,997)
Share-based compensation | 4,354 |  |  | 4,354 |  |
Vesting of restricted stock awards (in shares) |  | 385 |  |  |  |
Tax payments for stock issuances (in shares) |  | (145) |  |  |  |
Tax payments for stock issuances | (2,923) |  |  | (2,923) |  |
Unrealized gains (losses) on available-for-sale securities | (21) |  |  |  |  | (21)
Share repurchases (in shares) |  | (342) | 342 |  |  |
Share repurchases | (7,471) |  | $ (7,471) |  |  |
Pension adjustment, net of tax | 2,056 |  |  |  |  | 2,056
Ending balance (in shares) at Dec. 31, 2021 |  | 40,001 |  |  |  |
Ending balance at Dec. 31, 2021 | 219,780 | $ 40 | $ (12,501) | 100,250 | 143,173 | (11,182)
Ending balance, treasury stock, at cost (in shares) at Dec. 31, 2021 |  |  | 592 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net loss | (14,434) |  |  |  | (14,434) |
Foreign currency translation adjustment, net of tax | (7,246) |  |  |  | (1) | (7,245)
Share-based compensation | 8,642 |  |  | 8,642 |  |
Vesting of restricted stock awards (in shares) |  | 263 |  |  |  |
Tax payments for stock issuances (in shares) |  | (92) |  |  |  |
Tax payments for stock issuances | (1,587) |  |  | (1,587) |  |
Unrealized gains (losses) on available-for-sale securities | 18 |  |  |  |  | 18
Share repurchases (in shares) |  | (446) | 446 |  |  |
Share repurchases | (5,721) |  | $ (5,721) |  |  |
Pension adjustment, net of tax | $ 3,859 |  |  |  |  | 3,859
Ending balance (in shares) at Dec. 31, 2022 | 39,726 | 39,726 |  |  |  |
Ending balance at Dec. 31, 2022 | $ 203,311 | $ 40 | $ (18,222) | 107,305 | 128,738 | (14,550)
Ending balance, treasury stock, at cost (in shares) at Dec. 31, 2022 | 1,038 |  | 1,038 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net loss | $ (29,799) |  |  |  | (29,799) |
Foreign currency translation adjustment, net of tax | 3,689 |  |  |  |  | 3,689
Share-based compensation | 14,252 |  |  | 14,252 |  |
Vesting of restricted stock awards (in shares) |  | 741 |  |  |  |
Tax payments for stock issuances (in shares) |  | (262) |  |  |  |
Tax payments for stock issuances | (2,939) |  |  | (2,939) |  |
Unrealized gains (losses) on available-for-sale securities | $ 4 |  |  |  |  | 4
Share repurchases (in shares) | (2,700) | (2,686) | 2,686 |  |  |
Share repurchases | $ (29,155) | $ (2) | $ (29,155) | 2 |  |
Pension adjustment, net of tax | $ (222) |  |  |  |  | (222)
Ending balance (in shares) at Dec. 31, 2023 | 37,519 | 37,519 |  |  |  |
Ending balance at Dec. 31, 2023 | $ 159,141 | $ 38 | $ (47,377) | $ 118,620 | $ 98,939 | $ (11,079)
Ending balance, treasury stock, at cost (in shares) at Dec. 31, 2023 | 3,724 |  | 3,724 |  |  |

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