Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net loss	$ (37,144)	$ (7,888)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation expense	7,355	7,513
Amortization of intangible assets	6,838	8,846
Impairments of intangible assets, property and equipment	17,320	0
Impairments of operating lease assets	9,483	2,481
Inventory write down	11,567	377
Stock-based compensation expense	3,223	3,910
Loss from unconsolidated subsidiary	0	849
Contingent consideration benefit	0	(4,629)
Gain on extinguishment of debt	(7,459)	0
Deferred loan costs written off	1,829	0
Deferred income taxes	1,152	(1,021)
Noncash losses (gains) and other, net	(734)	2,366
Changes in operating assets and liabilities
Accounts receivable—trade	6,773	684
Inventories	6,704	6,948
Prepaid expenses and other assets	(11,002)	(3,031)
Cost and estimated profit in excess of billings	1,374	1,015
Accounts payable, deferred revenue and other accrued liabilities	(14,955)	1,251
Billings in excess of costs and estimated profits earned	(757)	(1,784)
Net cash provided by operating activities	1,567	17,887
Cash flows from investing activities
Capital expenditures for property and equipment	(958)	(3,687)
Proceeds from sale of equity investment, property and equipment	37	134
Net cash used in investing activities	(921)	(3,553)
Cash flows from financing activities
Borrowings of debt	55,000	20,000
Repayments of debt	(3,463)	(51,063)
Repurchases of stock	(179)	(973)
Deferred financing costs	(254)	0
Net cash provided by (used in) financing activities	51,104	(32,036)
Effect of exchange rate changes on cash	(712)	155
Net increase (decrease) in cash, cash equivalents and restricted cash	51,038	(17,547)
Cash, cash equivalents and restricted cash at beginning of period	57,911	47,241
Cash, cash equivalents and restricted cash at end of period	108,949	29,694
Noncash activities
Operating lease right of use assets obtained in exchange for lease obligations	688	6,568
Finance lease right of use assets obtained in exchange for lease obligations	$ 931	$ 453