Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash provided by operating activities:
Net income	$ 13,635	$ 15,032
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,948	12,907
Provision for doubtful accounts	72	241
Provision for inventory write-downs	2,148	3,610
Deferred income taxes	146	26
Tax benefit from exercise of stock options and vested restricted stock	(160)	399
Excess tax benefit from stock-based compensation	(49)	(422)
Shares issued for employee benefit plan	620	592
Stock-based compensation	3,447	3,280
Changes in operating assets and liabilities:
Accounts receivable	(10,876)	(2,772)
Inventories	15,758	(22,172)
Prepaid expenses and other assets	(282)	674
Accounts payable and accrued expenses	(8,335)	2,456
Accrued income taxes	(1,428)	(2,049)
Net cash provided by operating activities	27,644	11,802
Cash used for investing activities:
Acquisition of property, plant, and equipment	(6,525)	(10,140)
Acquisition of intangible assets	(802)	(814)
Net cash used for investing activities	(7,327)	(10,954)
Cash used for financing activities:
Issuance of debt	12,000
Payment of debt	(21,600)	(16,600)
Proceeds from stock options exercised	1,425	1,381
Treasury stock purchased	(619)	(9,512)
Excess tax benefit from stock-based compensation	49	422
Net cash used for financing activities	(8,745)	(24,309)
Effect of exchange rate changes on cash	272	1,212
Net increase (decrease) in cash and cash equivalents	11,844	(22,249)
Cash and cash equivalents at beginning of period	29,372	54,249
Cash and cash equivalents at end of period	$ 41,216	$ 32,000