Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities
Net income (loss)	$ 314,990	$ 423,075	$ (109,498)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	76,986	66,495	70,621
Non-cash gain on sale of fixed assets, net	(36,333)	(31,137)
Asset impairment charges		11,922	79,841
Deferred taxes	44,233	(164,590)	(15,132)
Other non-cash (gains) losses, net	(6,240)	(13,225)	6,563
Recovery of doubtful accounts receivable	(14)	(76)	(3,066)
Accretion of interest on long-term debt	784	650	569
Stock-based compensation expense	68,125	57,445	37,619
Excess tax benefit on stock-based compensation	(2,650)	(3,088)
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable	19,787	(37,510)	(6,680)
Inventories	(100,695)	(60,132)	84,765
Current and other assets	(15,932)	(31,423)	10,175
Trade accounts payable	(60,113)	16,031	38
Accrued and other liabilities	(47,055)	111,112	(49,014)
Income taxes payable	(15,639)	(68,112)	11,787
Deferred income on shipments to distributors	(19,088)	22,017	3,179
Net cash provided by operating activities	221,146	299,454	121,767
Cash flows from investing activities
Acquisitions of fixed assets	(84,564)	(99,808)	(31,750)
Proceeds from the sale of business, net of cash	1,597	19,023
Proceeds from the sale of fixed assets, net	47,250	652
Acquisition of businesses, net of cash	(20,256)		(3,362)
Acquisitions of intangible assets	(4,000)	(5,458)	(10,800)
Purchases of marketable securities		(20,567)	(34,820)
Sales or maturities of marketable securities	16,739	39,388	39,001
Investment in private company		(3,936)
Increases in long-term restricted cash		(5,000)	(1,850)
Net cash used in investing activities	(43,234)	(75,706)	(43,581)
Cash flows from financing activities
Principal payments on debt and capital leases	(85)	(11,106)	(6,177)
Repayment of bank lines of credit		(80,000)	(45,000)
Repurchase of common stock	(304,236)	(89,216)
Proceeds from issuance of common stock	28,746	29,911	9,746
Tax payments related to shares withheld for vested restricted stock units	(73,286)	(11,139)	(4,074)
Excess tax benefit on stock-based compensation	2,650	3,088
Net cash used in financing activities	(346,211)	(158,462)	(45,505)
Effect of exchange rate changes on cash and cash equivalents	(3,725)	(1,340)	(4,098)
Net (decrease) increase in cash and cash equivalents	(172,024)	63,946	28,583
Cash and cash equivalents at beginning of the year	501,455	437,509	408,926
Cash and cash equivalents at end of year	329,431	501,455	437,509
Supplemental cash flow disclosures:
Interest paid	1,857	2,864	4,464
Income taxes paid	31,986	14,993	7,222
Supplemental non-cash investing and financing activities disclosures:
Decreases in accounts payable related to fixed asset purchases	(21,000)	(841)	(2,777)
Decreases in liabilities related to intangible assets purchases	$ (4,000)	$ (4,000)	$ (4,800)