Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019		Jun. 30, 2018
Net income (loss)	$ (18,126)		$ (43,605)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	24,650		32,434
Amortization of deferred loan costs and debt discount	3,743		3,416
Provision for doubtful accounts	889		5,567
Foreign currency (gain) loss	234		1,037
Deferred income taxes	2,466		(10,410)
Gain on revaluation of contingent consideration	0		(202)
(Gain) loss on asset disposal	(188)		(912)
Loss on convertible debt embedded derivative	0		24,783
Non-cash compensation cost	6,082		7,006
Other, net	(1,196)		(1,951)
(Increase) decrease:
Receivables	3,534		(29,361)
Inventory	2,512		(3,502)
Prepaid expenses and other current assets	(5,312)		(4,250)
Increase (decrease):
Accounts payable	4,627		(3,181)
Other accrued liabilities	(15,156)		4,873
Income taxes	(3,189)		511
Net cash provided by (used in) operating activities	5,570		(17,747)
Cash flows from investing activities:
Capital expenditures1	(14,396)	[1]	(12,082)
Proceeds from disposal of assets	782		1,463
Other	89		(483)
Net cash used in investing activities	(13,525)		(11,102)
Cash flows from financing activities:
Net borrowings under revolving credit agreement	3,341		21,168
Contingent consideration payments	(428)		(1,106)
Debt issuance costs on Credit Facility	0		(855)
Payments related to withholding tax for share-based payment arrangements	(351)		(225)
Other	(121)		0
Net cash provided by financing activities	2,441		18,982
Effect of exchange rate changes on cash	(24)		(1,389)
Net decrease in cash or cash equivalents	(5,538)		(11,256)
Cash and cash equivalents at beginning of period	18,288		26,552
Cash and cash equivalents at end of period	$ 12,750		$ 15,296

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