Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss		$ (25,183)	$ (67,131)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization		36,700	48,466
Amortization of deferred loan costs and debt discounts		5,691	5,208
Provision for doubtful accounts		(440)	9,432
Foreign currency (gain) loss		348	1,457
Deferred income taxes		261	(14,319)
Gain on revaluation of contingent consideration		0	(202)
(Gain) loss on asset disposal		(137)	(900)
Loss on convertible debt embedded derivative		0	24,783
Non-cash compensation cost		8,670	9,414
Other, net		(1,398)	(2,911)
(Increase) decrease:
Receivables		4,384	(11,409)
Inventory		5,030	(2,632)
Prepaid expenses and other current assets		(3,490)	1,544
Increase (decrease):
Accounts payable		4,537	(6,560)
Other accrued liabilities		1,005	10,058
Income taxes		(2,959)	1,004
Net cash provided by (used in) operating activities		33,019	5,302
Cash flows from investing activities:
Capital expenditures	[1]	(23,199)	(19,394)
Proceeds from disposal of assets		802	1,464
Other		38	(462)
Net cash used in investing activities		(22,359)	(18,392)
Cash flows from financing activities:
Net borrowings (payments) under revolving credit agreement		(64,886)	6,370
Borrowings under term loan, net of debt discount		49,745	0
Contingent consideration payments		(428)	(1,106)
Debt issuance costs on Credit Facility		(1,475)	(855)
Payments related to withholding tax for share-based payment arrangements		(776)	(269)
Other		(230)	0
Net cash provided by (used in) financing activities		(18,050)	4,140
Effect of exchange rate changes on cash		(630)	(1,647)
Net decrease in cash and cash equivalents		(8,020)	(10,597)
Cash and cash equivalents at end of period		18,288	26,552
Cash and cash equivalents at beginning of period		$ 10,268	$ 15,955

[1] Excludes accrued capital expenditures for the nine months ended September 30, 2019 only.