Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net income (loss)	$ (17,649)	$ (3,675)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation, amortization and accretion	17,749	7,764
Impairment of long-lived assets	0	7,275
Amortization of debt related costs	185	338
Changes in fair value of contingent assets and liabilities	25,900	0
Gain on extinguishment of debt	(889)	0
Provision for excess and obsolete inventory	2,039	1,531
Stock-based compensation	7,905	6,460
Gain on sale of assets	(15,263)	0
Deferred taxes	2,685	1,067
Long-term income tax receivable	(731)	(1,109)
Long-term income tax payable and other long-term liabilities	1,147	1,409
Other	1,097	614
Increases (decreases) in cash from operating assets and liabilities:
Accounts receivable	1,551	2,087
Inventory	1,888	(6,777)
Other current assets	2,171	1,742
Accounts payable	5,888	(3,452)
Accrued expenses and other liabilities	14	(8,022)
Net cash provided by operating activities	35,687	7,252
Investing activities
Capital expenditures	(5,176)	(4,953)
Proceeds from sale of assets, net	15,823	0
Lending on bridge loan	0	(10,000)
Cash acquired in acquisition of business	0	17,562
Net cash provided by investing activities	10,647	2,609
Financing activities
Payments on long-term debt and other borrowings	(38,137)	(7,032)
Equity issuance costs	0	(345)
Deferred financing costs	0	(1,225)
Proceeds from stock option exercises	4,086	50
Proceeds from issuance of common stock	337	366
Payments for minimum statutory tax withholding related to net share settlement of equity awards	(1,792)	(2,032)
Net cash used in financing activities	(35,506)	(10,218)
Effect of foreign exchange rates on cash, cash equivalents and restricted cash	120	(112)
Net increase (decrease) in cash, cash equivalents and restricted cash	10,948	(469)
Cash, cash equivalents and restricted cash, beginning of period	82,694	92,919
Cash, cash equivalents and restricted cash, end of period	93,642	92,450
Reconciliation to amounts within the condensed consolidated balance sheets
Cash and cash equivalents	91,500	90,309
Restricted cash included in other long-term assets	2,142	2,141
Cash, cash equivalents and restricted cash at end of period	$ 93,642	$ 92,450