CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 11,669	$ 9,169
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,517	4,332
Long-lived asset impairment charge	772	0
Inventory step-up amortization	481	0
Deferred income taxes	185	(106)
Stock-based compensation	1,231	1,132
Loss from equity method investment	46	0
Changes in operating assets and liabilities:
Accounts receivable	(7,780)	(10,412)
Inventories	(12,015)	(4,059)
Accounts payable	13,686	7,341
Accrued payroll and other compensation	(1,154)	(566)
Accrued taxes	574	2,575
Other, net	(1,854)	3,377
Net cash provided by operating activities	12,358	12,783
Cash flows from investing activities:
Capital expenditures	(9,560)	(9,616)
Net cash used for investing activities	(9,560)	(9,616)
Cash flows from financing activities:
Debt repayments	(10,467)	(10,147)
Common stock issued	155	320
Common stock repurchased	(2,497)	(710)
Net cash used for financing activities	(12,809)	(10,537)
Effect of exchange rate changes on cash	616	986
Decrease in cash and cash equivalents	(9,395)	(6,384)
Cash and cash equivalents at beginning of period	71,934	75,909
Cash and cash equivalents at end of period	$ 62,539	$ 69,525