Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net income	$ 35,631	$ 5,523
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	11,787	11,431
Allowance for accounts receivable	6,448	3,739
Non-cash amortization of debt financing costs	1,054	891
Shared-based compensation expense	2,297	1,842
Deferred income taxes	9,042	88
Non-cash gain on derivative contracts	(2,842)	(979)
Change in other operating items:
Accounts receivable	(51,076)	(32,404)
Inventories	4,507	(15,086)
Prepaid expenses	(4,462)	(1,755)
Accounts payable	6,653	28,751
Other operating activities, net	1,000	(4,351)
Net cash provided by (used in) operating activities	20,039	(2,310)
Cash Flows from Investing Activities:
Purchases of property, plant and equipment	(9,823)	(10,290)
Proceeds from disposal/sale of property, plant and equipment	18	254
Net cash used in investing activities	(9,805)	(10,036)
Cash Flows from Financing Activities:
Borrowing of Revolving Credit Facility	80,500	0
Repayment of Revolving Credit Facility	(80,500)	0
Repayment of Term Loan	(3,281)	(1,094)
Borrowing of Term Loan	0	175,000
Repayment of 7.875% notes	0	(235,000)
Prepayment charge for redemption of 7.875% notes	0	(1,543)
Term Loan discount	0	(3,500)
Payment of debt issuance cost	0	(4,242)
Net cash used in financing activities	(3,281)	(70,379)
Effect of Foreign Currency Exchange Rate Changes on Cash	(1,672)	2,797
Net Increase (Decrease) in Cash	5,281	(79,928)
Cash:
Beginning of period	52,244	130,160
End of period	57,525	50,232
Supplemental Cash Flow Information:
Cash paid for interest	10,421	13,767
Cash paid for income taxes, net	2,081	2,568
Unpaid purchases of property and equipment included in accounts payable	$ 132	$ 321