Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net cash flows from operating activities:
Net income (loss)	$ (3,629)	$ 5,386
Adjustments to reconcile net (loss) income to net cash from operating activities:
Depreciation and amortization	9,105	4,352
Non-cash compensation	3,117	3,796
Deferred income taxes	(2,871)	(14)
Other non-cash adjustments to (loss) income	1,478	1,048
Changes in operating assets and liabilities:
Receivables	(6,720)	(3,961)
Inventories and deferred preservation costs	1,125	(4,023)
Prepaid expenses and other assets	(2,257)	(3,335)
Accounts payable, accrued expenses, and other liabilities	(8,308)	(1,227)
Net cash flows (used in) provided by operating activities	(8,960)	2,022
Net cash flows from investing activities:
Capital expenditures	(3,353)	(4,335)
Other	(278)	776
Net cash flows used in investing activities	(3,631)	(3,559)
Net cash flows from financing activities:
Repayment of term loan	(1,400)	(2,978)
Proceeds from exercise of stock options and issuance of common stock	943	1,765
Redemption and repurchase of stock to cover tax withholdings	(1,811)	(1,552)
Other	(692)	(2)
Net cash flows used in financing activities	(2,960)	(2,767)
Effect of exchange rate changes on cash	517	169
Decrease in cash, cash equivalents, and restricted securities	(15,034)	(4,135)
Cash, cash equivalents, and restricted securities beginning of period	40,753	56,642
Cash, cash equivalents, and restricted securities end of period	$ 25,719	$ 52,507