Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net loss	$ (31,064)	$ (10,061)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation, amortization and accretion	30,088	16,295
Impairment of long-lived assets	9,540	7,275
Amortization of debt related costs	430	199
Changes in fair value of contingent assets and liabilities	28,500	800
Gain on extinguishment of debt	(889)	0
Provision for excess and obsolete inventory	2,317	1,870
Stock-based compensation	11,772	10,452
Gain on sale of assets	(15,263)	0
Deferred taxes	1,028	(781)
Long-term income tax receivable	3,092	(1,664)
Long-term income tax payable and other long-term liabilities	(3,617)	2,114
Other	1,724	1,034
(Decreases) increases in cash from operating assets and liabilities:
Accounts receivable	(7,721)	(703)
Inventory	(625)	(9,593)
Other current assets	1,998	1,563
Accounts payable	4,776	3,762
Accrued expenses and other liabilities	3,941	(6,735)
Net cash provided by operating activities	40,027	15,827
Investing activities
Capital expenditures	(7,596)	(8,689)
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 (used in) investing activities	8,227	(1,127)
Financing activities
Payments on long-term debt and other borrowings	(40,757)	(11,166)
Equity issuance costs	0	(3,777)
Deferred financing costs	0	(1,223)
Proceeds from stock option exercises	4,616	77
Proceeds from issuance of common stock	768	683
Payments for minimum statutory tax withholding related to net share settlement of equity awards	(1,859)	(2,082)
Net cash used in financing activities	(37,232)	(17,488)
Effect of foreign exchange rates on cash, cash equivalents and restricted cash	(99)	4
Net increase (decrease) in cash, cash equivalents and restricted cash	10,923	(2,784)
Cash, cash equivalents and restricted cash, beginning of period	82,694	92,919
Cash, cash equivalents and restricted cash, end of period	93,617	90,135
Reconciliation to amounts within the condensed consolidated balance sheets
Cash and cash equivalents	91,475	87,994
Restricted cash included in other long-term assets	2,142	2,141
Cash, cash equivalents and restricted cash at end of period	$ 93,617	$ 90,135