Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net cash flows from operating activities:
Net income (loss)	$ 2,535	$ (3,629)
Adjustments to reconcile net income (loss) to net cash from operating activities:
Depreciation and amortization	8,731	9,105
Non-cash compensation	4,119	3,117
Deferred income taxes	(301)	(2,871)
Other non-cash adjustments to income (loss)	4,032	1,478
Changes in operating assets and liabilities:
Receivables	(10,446)	(6,720)
Inventories and deferred preservation costs	262	1,125
Prepaid expenses and other assets	(3,131)	(2,257)
Accounts payable, accrued expenses, and other liabilities	(3,894)	(8,308)
Net cash flows provided by (used in) operating activities	1,907	(8,960)
Net cash flows from investing activities:
Capital expenditures	(3,344)	(3,353)
Other	(302)	(278)
Net cash flows used in investing activities	(3,646)	(3,631)
Net cash flows from financing activities:
Repayment of term loan	(1,393)	(1,400)
Proceeds from exercise of stock options and issuance of common stock	3,582	943
Redemption and repurchase of stock to cover tax withholdings	(2,664)	(1,811)
Other	(349)	(692)
Net cash flows used in financing activities	(824)	(2,960)
Effect of exchange rate changes on cash, cash equivalents, and restricted securities	582	517
Decrease in cash, cash equivalents, and restricted securities	(1,981)	(15,034)
Cash, cash equivalents, and restricted securities beginning of year	42,236	40,753
Cash, cash equivalents, and restricted securities end of year	$ 40,255	$ 25,719