Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash provided by operating activities:
Net income	$ 7,948	$ 6,613
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,588	3,079
Provision for doubtful accounts	237	747
Provision for inventory write-downs	2,099	1,450
Deferred income taxes	645	33
Tax benefit from exercise of stock options and vested restricted stock	374	109
Excess tax benefit from stock-based compensation	(344)	(103)
Shares issued for employee benefit plan	396	375
Stock-based compensation	2,085	2,532
Changes in operating assets and liabilities:
Accounts receivable	262	3,872
Inventories	(11,409)	(6,368)
Prepaid expenses and other assets	(78)	307
Accounts payable and accrued expenses	(2,514)	2,992
Accrued income taxes	(3,696)	(1,909)
Net cash provided by operating activities	4,593	13,729
Cash (used for) provided by investing activities:
Term deposit		49,246
Acquisition of property, plant, and equipment	(5,554)	(3,041)
Acquisition of intangible assets	(513)	(749)
Net cash (used for) provided by investing activities	(6,067)	45,456
Cash used for financing activities:
Payment of debt	(14,400)
Proceeds from stock options exercised	1,212	257
Treasury stock purchased	(3,500)	(7,308)
Excess tax benefit from stock-based compensation	344	103
Net cash used for financing activities	(16,344)	(6,948)
Effect of exchange rate changes on cash	1,469	(2,415)
Net (decrease) increase in cash and cash equivalents	(16,349)	49,822
Cash and cash equivalents at beginning of period	54,249	29,016
Cash and cash equivalents at end of period	$ 37,900	$ 78,838