CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 24,794	$ 19,982
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,778	8,634
Long-lived asset impairment charge	772	0
Inventory step-up amortization	1,025	0
Deferred income taxes	157	(553)
Stock-based compensation	2,287	2,074
Loss from equity method investment	68	0
Changes in operating assets and liabilities:
Accounts receivable	(8,197)	(11,294)
Inventories	(14,202)	(704)
Accounts payable	15,479	8,226
Accrued payroll and other compensation	(729)	2,859
Accrued taxes	(977)	492
Other, net	(5,460)	3,691
Net cash provided by operating activities	27,795	33,407
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(353)	0
Capital expenditures	(15,068)	(15,549)
Net cash used for investing activities	(15,421)	(15,549)
Cash flows from financing activities:
Debt repayments	(21,566)	(10,297)
Common stock issued	313	404
Common stock repurchased	(2,497)	(710)
Net cash used for financing activities	(23,750)	(10,603)
Effect of exchange rate changes on cash	2,984	(449)
(Decrease) Increase in cash and cash equivalents	(8,392)	6,806
Cash and cash equivalents at beginning of period	71,934	75,909
Cash and cash equivalents at end of period	$ 63,542	$ 82,715