Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 38,492	$ 49,081
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,459	26,154
Deferred income taxes	7,876	(11,485)
Gain on the sale of property, plant and equipment	(204)	(35)
Asset impairment		24
Stock-based compensation expense	4,723	4,102
Excess tax benefit from stock-based compensation	(25)	(35)
Changes in operating assets and liabilities:
Accounts receivable	(30,795)	(7,049)
Inventories	14,325	(69,514)
Prepaid expenses and other assets	29,373	8,615
Accounts payable	(15,327)	19,426
Accrued liabilities	(1,258)	(9,837)
Income taxes	(3,373)	(9,281)
Net cash provided by operations	70,266	166
Cash flows from investing activities:
Proceeds from sales and redemptions of investments	11,025	11,100
Additions to property, plant and equipment	(34,458)	(49,756)
Proceeds from the sale of property, plant and equipment	228	186
Additions to purchased software	(1,050)	(540)
Thailand flood property insurance proceeds	22,351
Net cash used in investing activities	(1,904)	(39,010)
Cash flows from financing activities:
Proceeds from stock options exercised	3,461	1,606
Excess tax benefits from stock-based compensation	25	35
Principal payments on capital lease obligations	(310)	(272)
Share repurchases	(31,387)	(53,188)
Debt issuance costs	(867)
Net cash used in financing activities	(29,078)	(51,819)
Effect of exchange rate changes	2,574	(1,837)
Net increase (decrease) in cash and cash equivalents	41,858	(92,500)
Cash and cash equivalents at beginning of year	283,920	346,345
Cash and cash equivalents at September 30	$ 325,778	$ 253,845