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Consolidated Statements Of Shareholders' Equity - USD ($)
On-X [Member]
Common Stock [Member]
On-X [Member]
Additional Paid In Capital [Member]
On-X [Member]
Retained Earnings [Member]
On-X [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
On-X [Member]
Treasury Stock [Member]
On-X [Member]
JOTEC [Member]
Common Stock [Member]
JOTEC [Member]
Additional Paid In Capital [Member]
JOTEC [Member]
Retained Earnings [Member]
JOTEC [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
JOTEC [Member]
Treasury Stock [Member]
JOTEC [Member]
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, 2015                         $ 298,000 $ 142,888,000 $ 23,365,000 $ (76,000) $ (11,224,000) $ 155,251,000
Balance, shares at Dec. 31, 2015                         29,766,000       (1,265,000)  
Net (loss) income                         10,778,000 10,778,000
Foreign currency translation gain (loss)                         (353,000) (353,000)
Comprehensive (loss) income                         10,425,000
Equity compensation                         $ 3,000 6,599,000 6,602,000
Equity compensation, shares                         342,000        
Exercise of options                         $ 3,000 2,083,000 $ (712,000) 1,374,000
Exercise of options, shares                         372,000       (69,000)  
Employee stock purchase plan                         $ 1,000 828,000 $ 829,000
Employee stock purchase plan, shares                         90,000         90,000
Excess tax benefit/shortfall                         606,000 $ 606,000
Redemption and repurchase of stock to cover tax withholdings                         (499,000) $ (198,000) (697,000)
Redemption and repurchase of stock to cover tax withholdings, shares                         (44,000)       (22,000)  
Stock issued during period, Acquisition $ 37,000 $ 34,556,000 $ 34,593,000                        
Stock issued during period, Shares, Acquisition 3,704,000                                
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 (loss) income                         3,704,000 3,704,000
Foreign currency translation gain (loss)                         2,286,000 2,286,000
Comprehensive (loss) income                         5,990,000
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)        
Stock issued during period, Acquisition             $ 27,000 $ 53,092,000 $ 53,119,000            
Stock issued during period, Shares, Acquisition             2,683,000                  
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 (loss) income                         (2,840,000) (2,840,000)
Foreign currency translation gain (loss)                         (7,929,000) (7,929,000)
Comprehensive (loss) income                         (10,769,000)
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 2016-09 [Member]                           379,000 (238,000)      
Cumulative effect of adjustment | ASU 606 [Member]                         $ 215,000 $ 215,000