CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net loss	$ (48,827)	$ (343,573)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation	22,148	24,753
Amortization of intangibles	12,212	12,376
Amortization of operating leases	6,001	0
Amortization of deferred financing costs	1,960	2,160
Provision (benefit) for doubtful accounts	(232)	2,121
Benefit for deferred income taxes	0	(1,588)
Provision for inventory obsolescence	3,670	1,919
Stock-based compensation expense	4,191	7,717
Impairment of goodwill	0	296,196
Gain on extinguishment of debt	(17,618)	(37,501)
(Gain) loss on sale of property and equipment	660	(2,900)
(Gain) loss on revaluation of contingent liabilities	(124)	781
Changes in operating assets and liabilities
Accounts receivable, net	(17,101)	59,964
Inventories, net	(8,284)	6,244
Prepaid expenses and other current assets	2,956	(1,457)
Accounts payable and accrued expenses	17,759	(27,073)
Income taxes receivable/payable	187	(586)
Other assets and liabilities	(6,262)	5,087
Net cash provided by (used in) operating activities	(26,704)	4,640
Cash flows from investing activities
Proceeds from sales of property and equipment	2,997	5,948
Proceeds from property and equipment casualty losses	0	555
Purchases of property and equipment	(4,832)	(7,053)
Net cash used in investing activities	(1,835)	(550)
Cash flows from financing activities
Purchases of Senior Notes	(8,355)	(14,410)
Payments on Magnum Promissory Notes	(562)	0
Payments on finance leases	(810)	(738)
Payments of contingent liability	(110)	(1,331)
Vesting of restricted stock	(473)	(158)
Net cash used in financing activities	(10,310)	(16,637)
Impact of foreign currency exchange on cash	(46)	(104)
Net decrease in cash and cash equivalents	(38,895)	(12,651)
Cash and cash equivalents
Cash and cash equivalents beginning of period	68,864	92,989
Cash and cash equivalents end of period	29,969	80,338
Supplemental disclosures of cash flow information:
Cash paid for interest	15,787	18,901
Cash refunded for income taxes	24	482
Cash paid for operating leases	6,114	0
Right of use assets obtained in exchange for operating lease obligations	2,236	0
Non-cash investing and financing activities:
Capital expenditures in accounts payable and accrued expenses	781	150
Receivable from property and equipment sale (including insurance)	992	4,359
Termination of contingent liability related to business acquisition	$ 0	$ 3,375