Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net income	$ 26,827	$ 35,631
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	10,976	11,787
Allowance for accounts receivable	5,000	6,448
Non-cash amortization of debt financing costs	1,030	1,054
Shared-based compensation expense	2,200	2,297
Deferred income taxes	2,903	9,042
Non-cash loss / (gain) on derivative contracts	2,092	(2,842)
Change in other operating items:
Accounts receivable	(24,765)	(51,076)
Inventories	1,191	4,507
Prepaid expenses	(7,458)	(4,462)
Accounts payable	3,272	6,653
Other operating activities, net	5,767	1,000
Net cash provided by operating activities	29,035	20,039
Cash Flows from Investing Activities:
Purchases of property, plant and equipment	(19,270)	(9,823)
Proceeds from disposal/sale of property, plant and equipment	20	18
Payments for acquisitions	(34,000)	0
Net cash used in investing activities	(53,250)	(9,805)
Cash Flows from Financing Activities:
Borrowings on Revolving Credit Facility	8,500	80,500
Repayment of Revolving Credit Facility	(8,500)	(80,500)
Repayment of Term Loan	(6,338)	(3,281)
Other financing activities	(381)	0
Net cash used in financing activities	(6,719)	(3,281)
Effect of Foreign Currency Exchange Rate Changes on Cash	(1,276)	(1,672)
Net (Decrease) Increase in Cash	(32,210)	5,281
Cash:
Beginning of period	70,913	52,244
End of period	38,703	57,525
Supplemental Cash Flow Information:
Cash paid for interest	10,212	10,421
Cash paid for income taxes, net	5,530	2,081
Unpaid purchases of property and equipment included in accounts payable	$ 155	$ 132