CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash provided by (used for) operating activities:
Net income	$ 17,410	$ 13,635
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	13,387	12,948
Provision for doubtful accounts	140	72
Provision for inventory write-downs	1,988	2,148
Deferred income taxes	127	146
Tax benefit from exercise of stock options and vested restricted stock	1,040	(160)
Excess tax benefit from stock-based compensation	(1,011)	(49)
Shares issued for employee benefit plan	598	620
Stock-based compensation	3,950	3,447
Changes in operating assets and liabilities:
Accounts receivable	(12,734)	(10,876)
Inventories	(20,701)	15,758
Prepaid expenses and other assets	352	(282)
Accounts payable and accrued expenses	(3,015)	(8,335)
Accrued income and other taxes	(729)	(1,428)
Net cash provided by (used for) operating activities	802	27,644
Cash used for investing activities:
Acquisition of property, plant, and equipment	(7,978)	(6,525)
Acquisition of intangible assets	(978)	(802)
Net cash used for investing activities	(8,956)	(7,327)
Cash provided by (used for) financing activities:
Issuance of debt	19,500	12,000
Payment of debt	(19,500)	(21,600)
Proceeds from stock options exercised	8,487	1,425
Treasury stock purchased	(3,153)	(619)
Excess tax benefit from stock-based compensation	1,011	49
Net cash provided by (used for) financing activities	6,345	(8,745)
Effect of exchange rate changes on cash	1,818	272
Net increase (decrease) in cash and cash equivalents	9	11,844
Cash and cash equivalents at beginning of year	44,593	29,372
Cash and cash equivalents at end of period	44,602	41,216
Supplemental Cash Flow Information:
Income taxes paid	3,319	6,494
Interest paid	$ 44	$ 245