Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows from Operating Activities:
Net income	$ 9,853	$ 628
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	3,813	3,916
Provision for doubtful accounts	2,637	809
Non-cash amortization of debt financing costs	350	210
Shared-based compensation expense	673	636
Deferred income taxes	2,304	(1,030)
Non-cash gain on derivative contracts	(2,489)	(1,555)
Change in other operating items:
Accounts receivable	(34,884)	(16,340)
Inventories	5,261	(4,890)
Prepaid expenses	(2,065)	(4,296)
Accounts payable	(2,105)	12,908
Other operating activities, net	(3,363)	1,622
Net cash used in provided by operating activities	(20,015)	(7,382)
Cash Flows from Investing Activities:
Purchases of property, plant and equipment	(1,716)	(4,461)
Proceeds from disposal/sale of property, plant and equipment	0	104
Net cash used in investing activities	(1,716)	(4,357)
Cash Flows from Financing Activities:
Borrowing of Revolving Credit Facility	36,500	0
Repayment of Revolving Credit Facility	(29,000)	0
Repayment of Term Loan	(1,094)	0
Net cash provided by financing activities	6,406	0
Effect of Foreign Currency Exchange Rate Changes on Cash	989	576
Net Decrease in Cash	(14,336)	(11,163)
Cash:
Beginning of period	52,244	130,160
End of period	37,908	118,997
Supplemental Cash Flow Information:
Cash paid for interest	3,408	36
Cash paid for income taxes, net	808	713
Unpaid purchases of property and equipment included in accounts payable	$ 49	$ 226