Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Operations [Abstract]
Net sales	$ 1,352,850	$ 1,349,158	$ 639,194
Cost of sales	688,125	683,824	398,104
Gross profit	664,725	665,334	241,090
Selling, general and administrative	177,638	189,483	164,125
Research and development	185,980	174,740	149,101
Restructuring and other charges (benefits), net	(464)	1,373	3,840
Total operating expenses	363,154	365,596	317,066
Operating income (loss)	301,571	299,738	(75,976)
Interest income	5,735	7,153	9,569
Interest expense	(15,876)	(1,525)	(2,073)
Other income (expense), net	1,719	(708)	(901)
Income (loss) before provision for income taxes	293,149	304,658	(69,381)
Provision for income taxes	42,470	42,326	15,854
Net income (loss)	$ 250,679	$ 262,332	$ (85,235)
Net income (loss) per share:
Basic	$ 3.29	$ 2.83	$ (0.88)
Diluted	$ 3.20	$ 2.79	$ (0.88)
Shares used in basic per share calculations	76,161	92,690	96,487
Shares used in diluted per share calculations	78,279	94,084	96,487