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Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands | Common Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Treasury Stock [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2017 |  | $ 376 |  | $ 249,935 | $ 215 | $ 37,609 |  | $ 1,857 |  | $ (12,719) | $ 215 | $ 277,058
Balance, shares at Dec. 31, 2017 |  | 37,618,000 |  |  |  |  |  |  |  | (1,386,000) |  |
Net (loss) income |  |  |  |  |  | (2,840) |  |  |  |  |  | (2,840)
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation gain (loss), net of tax |  |  |  |  |  |  |  | (7,929) |  |  |  | (7,929)
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  | (10,769)
Equity compensation |  | $ 3 |  | 6,806 |  |  |  |  |  |  |  | 6,809
Equity compensation, shares |  | 287,000 |  |  |  |  |  |  |  |  |  |
Exercise of options |  | $ 5 |  | 4,382 |  |  |  |  |  | $ (1,872) |  | 2,515
Exercise of options, shares |  | 578,000 |  |  |  |  |  |  |  | (98,000) |  |
Employee stock purchase plan |  | $ 1 |  | 1,338 |  |  |  |  |  |  |  | $ 1,339
Employee stock purchase plan, shares |  | 83,000 |  |  |  |  |  |  |  |  |  | 83,000
Redemption and repurchase of stock to cover tax withholdings |  |  |  | (2,100) |  |  |  |  |  |  |  | $ (2,100)
Redemption and repurchase of stock to cover tax withholdings, shares |  | (103,000) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2018 |  | $ 385 |  | 260,361 |  | 34,984 |  | (6,072) |  | $ (14,591) |  | 275,067
Balance, shares at Dec. 31, 2018 |  | 38,463,000 |  |  |  |  |  |  |  | (1,484,000) |  |
Net (loss) income |  |  |  |  |  | 1,720 |  |  |  |  |  | 1,720
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation gain (loss), net of tax |  |  |  |  |  |  |  | (2,517) |  |  |  | (2,517)
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  | (797)
Equity compensation |  | $ 2 |  | 9,409 |  |  |  |  |  |  |  | 9,411
Equity compensation, shares |  | 254,000 |  |  |  |  |  |  |  |  |  |
Exercise of options |  | $ 3 |  | 3,292 |  |  |  |  |  |  |  | 3,295
Exercise of options, shares |  | 334,000 |  |  |  |  |  |  |  |  |  |
Employee stock purchase plan |  | $ 1 |  | 1,462 |  |  |  |  |  |  |  | $ 1,463
Employee stock purchase plan, shares |  | 61,000 |  |  |  |  |  |  |  |  |  | 61,000
Redemption and repurchase of stock to cover tax withholdings |  | $ (1) |  | (2,742) |  |  |  |  |  |  |  | $ (2,743)
Redemption and repurchase of stock to cover tax withholdings, shares |  | (94,000) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2019 |  | $ 390 |  | 271,782 |  | 36,704 |  | (8,589) |  | $ (14,591) |  | 285,696
Balance, shares at Dec. 31, 2019 |  | 39,018,000 |  |  |  |  |  |  |  | (1,484,000) |  |
Net (loss) income |  |  |  |  |  | (16,682) |  |  |  |  |  | (16,682)
Other comprehensive (loss) income: |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation gain (loss), net of tax |  |  |  |  |  |  |  | 15,332 |  |  |  | 15,332
Comprehensive loss |  |  |  |  |  |  |  |  |  |  |  | (1,350)
Stock issued for the Ascyrus Acquisition |  | $ 10 |  | 19,990 |  |  |  |  |  |  |  | 20,000
Stock issued for the Ascyrus Acquisition, shares |  | 992,000 |  |  |  |  |  |  |  |  |  |
Equity component of the convertible note issuance |  |  |  | 16,426 |  |  |  |  |  |  |  | 16,426
Equity compensation |  | $ 3 |  | 7,501 |  |  |  |  |  |  |  | 7,504
Equity compensation, shares |  | 296,000 |  |  |  |  |  |  |  |  |  |
Exercise of options |  | $ 1 |  | 927 |  |  |  |  |  | $ (57) |  | 871
Exercise of options, shares |  | 89,000 |  |  |  |  |  |  |  | (3,000) |  |
Employee stock purchase plan |  | $ 1 |  | 1,560 |  |  |  |  |  |  |  | $ 1,561
Employee stock purchase plan, shares |  | 83,000 |  |  |  |  |  |  |  |  |  | 83,000
Redemption and repurchase of stock to cover tax withholdings |  | $ (1) |  | (1,994) |  |  |  |  |  |  |  | $ (1,995)
Redemption and repurchase of stock to cover tax withholdings, shares |  | (84,000) |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2020 |  | $ 404 |  | $ 316,192 |  | $ 20,022 |  | $ 6,743 |  | $ (14,648) |  | $ 328,713
Balance, shares at Dec. 31, 2020 |  | 40,394,000 |  |  |  |  |  |  |  | (1,487,000) |  |

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