CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash provided by (used for) operating activities:
Net income	$ 2,743	$ 5,189
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	5,929	4,667
Provision for doubtful accounts	(40)	2
Provision for inventory write-downs	756	906
Deferred income taxes	(407)	(806)
Tax benefit from exercise of stock options and vested restricted stock	616	567
Excess tax benefit from stock-based compensation	(668)	(587)
Shares issued for employee benefit plan	345	391
Employee and director stock-based compensation	2,493	1,959
Performance-based warrant stock-based compensation	866	0
Changes in operating assets and liabilities:
Accounts receivable	12,255	342
Inventories	5,095	(5,993)
Prepaid expenses and other assets	(1,604)	755
Accounts payable and accrued expenses	(22,900)	(12,209)
Accrued income taxes	(2,338)	(832)
Net cash provided by (used for) operating activities	3,141	(5,649)
Cash used for investing activities:
Acquisition of property, plant, and equipment	(7,480)	(7,210)
Acquisition of intangible assets	(564)	(681)
Net cash used for investing activities	(8,044)	(7,891)
Cash provided by (used for) financing activities:
Borrowings under line of credit	42,987	0
Repayments on line of credit	(35,000)	0
Proceeds from stock options exercised	1,935	989
Treasury stock purchased	(1,724)	(4,021)
Excess tax benefit from stock-based compensation	668	587
Net cash provided by (used for) financing activities	8,866	(2,445)
Effect of exchange rate changes on cash	(852)	566
Net increase (decrease) in cash and cash equivalents	3,111	(15,419)
Cash and cash equivalents at beginning of year	52,966	112,521
Cash and cash equivalents at end of period	56,077	97,102
Supplemental cash flow information:
Income taxes paid	2,933	2,000
Interest paid	$ 302	$ 0