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Consolidated Statements Of Shareholders' Equity - USD ($) | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2016 | $ 342,000 | $ 187,061,000 | $ 34,143,000 | $ (429,000) | $ (12,134,000) | $ 208,983,000
Balance, shares at Dec. 31, 2016 | 34,230,000 |  |  |  | (1,356,000) |
Net income (loss) |  |  | 3,704,000 |  |  | 3,704,000
Foreign currency translation gain (loss) |  |  |  | 2,286,000 |  | 2,286,000
Comprehensive income (loss) |  |  |  |  |  | 5,990,000
Stock issued for JOTEC transaction | $ 27,000 | 53,092,000 |  |  |  | 53,119,000
Stock issued for JOTEC transaction, shares | 2,683,000 |  |  |  |  |
Equity compensation | $ 3,000 | 7,310,000 |  |  |  | 7,313,000
Equity compensation, shares | 311,000 |  |  |  |  |
Exercise of options | $ 4,000 | 2,476,000 |  |  | $ (585,000) | 1,895,000
Exercise of options, shares | 393,000 |  |  |  | (30,000) |
Employee stock purchase plan | $ 1,000 | 1,230,000 |  |  |  | $ 1,231,000
Employee stock purchase plan, shares | 93,000 |  |  |  |  | 93,000
Redemption and repurchase of stock to cover tax withholdings | $ (1,000) | (1,613,000) |  |  |  | $ (1,614,000)
Redemption and repurchase of stock to cover tax withholdings, shares | (92,000) |  |  |  |  |
Balance at Dec. 31, 2017 | $ 376,000 | 249,935,000 | 37,609,000 | 1,857,000 | $ (12,719,000) | 277,058,000
Balance, shares at Dec. 31, 2017 | 37,618,000 |  |  |  | (1,386,000) |
Cumulative effect of adjustment | ASU 2016-09 [Member] |  | 379,000 | (238,000) |  |  | 141,000
Net income (loss) |  |  | (2,840,000) |  |  | (2,840,000)
Foreign currency translation gain (loss) |  |  |  | (7,929,000) |  | (7,929,000)
Comprehensive income (loss) |  |  |  |  |  | (10,769,000)
Stock issued for JOTEC transaction, shares |  |  |  |  |  |
Equity compensation | $ 3,000 | 6,806,000 |  |  |  | 6,809,000
Equity compensation, shares | 287,000 |  |  |  |  |
Exercise of options | $ 5,000 | 4,382,000 |  |  | $ (1,872,000) | 2,515,000
Exercise of options, shares | 578,000 |  |  |  | (98,000) |
Employee stock purchase plan | $ 1,000 | 1,338,000 |  |  |  | $ 1,339,000
Employee stock purchase plan, shares | 83,000 |  |  |  |  | 83,000
Redemption and repurchase of stock to cover tax withholdings |  | (2,100,000) |  |  |  | $ (2,100,000)
Redemption and repurchase of stock to cover tax withholdings, shares | (103,000) |  |  |  |  |
Balance at Dec. 31, 2018 | $ 385,000 | 260,361,000 | 34,984,000 | (6,072,000) | $ (14,591,000) | 275,067,000
Balance, shares at Dec. 31, 2018 | 38,463,000 |  |  |  | (1,484,000) |
Cumulative effect of adjustment | ASU 606 [Member] |  |  | 215,000 |  |  | 215,000
Net income (loss) |  |  | 1,720,000 |  |  | 1,720,000
Foreign currency translation gain (loss) |  |  |  | (2,517,000) |  | (2,517,000)
Comprehensive income (loss) |  |  |  |  |  | (797,000)
Equity compensation | $ 2,000 | 9,409,000 |  |  |  | 9,411,000
Equity compensation, shares | 254,000 |  |  |  |  |
Exercise of options | $ 3,000 | 3,292,000 |  |  |  | 3,295,000
Exercise of options, shares | 334,000 |  |  |  |  |
Employee stock purchase plan | $ 1,000 | 1,462,000 |  |  |  | $ 1,463,000
Employee stock purchase plan, shares | 61,000 |  |  |  |  | 61,000
Redemption and repurchase of stock to cover tax withholdings | $ (1,000) | (2,742,000) |  |  |  | $ (2,743,000)
Redemption and repurchase of stock to cover tax withholdings, shares | (94,000) |  |  |  |  |
Balance at Dec. 31, 2019 | $ 390,000 | 271,782,000 | 36,704,000 | $ (8,589,000) | $ (14,591,000) | $ 285,696,000
Balance, shares at Dec. 31, 2019 | 39,018,000 |  |  |  | (1,484,000) |
Cumulative effect of adjustment | ASU 2016-09 [Member] |  | $ 379,000 | $ (238,000) |  |  |

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