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Consolidated Statements Of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Net cash flows from operating activities:    
Net income $ 6,711 $ 7,881
Adjustments to reconcile net income to net cash from operating activities:    
Gain from sale of business components   (7,915)
Depreciation and amortization 6,683 6,248
Non-cash compensation 5,652 4,617
Other non-cash adjustments to income 879 5,595
Changes in operating assets and liabilities:    
Receivables (4,303) 3,729
Inventories and deferred preservation costs (6,901) (5,739)
Prepaid expenses and other assets (3,040) (46)
Accounts payable, accrued expenses, and other liabilities (855) 304
Net cash flows provided by operating activities 4,826 14,674
Net cash flows from investing activities:    
Acquisition of On-X, net of cash acquired   (91,152)
Acquisition of PhotoFix technology   (1,226)
Proceeds from sale of business components 740 19,795
Decrease in restricted cash   5,000
Capital expenditures (5,384) (3,511)
Other 5 (12)
Net cash flows used in investing activities (4,639) (71,106)
Net cash flows from financing activities:    
Proceeds from issuance of term loan   75,000
Repayment of term loan (3,916) (1,406)
Payment of debt issuance costs   (2,289)
Proceeds from exercise of stock options and issuance of common stock 2,599 2,116
Redemption and repurchase of stock to cover tax withholdings (1,600) (599)
Other (3) 571
Net cash flows (used in) provided by financing activities (2,920) 73,393
Effect of exchange rate changes on cash 333 (418)
(Decrease) increase in cash and cash equivalents (2,400) 16,543
Cash and cash equivalents, beginning of period 56,642 37,588
Cash and cash equivalents, end of period $ 54,242 $ 54,131