Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements of Income
Net sales	$ 132,715	$ 267,959	$ 409,171	$ 787,450
Cost of sales	82,831	143,025	232,765	396,204
Gross profit	49,884	124,934	176,406	391,246
Operating expenses (income):
Selling, general and administrative	13,892	23,569	54,558	73,966
Research and development	25,775	26,404	72,991	69,927
Amortization	1,477	1,277	3,877	3,519
Restructuring	2,014		2,077
Other, net	(737)	(199)	(626)	(228)
Total operating expenses	42,421	51,051	132,877	147,184
Operating income	7,463	73,883	43,529	244,062
Interest income (expense), net	176	244	708	(1,142)
Loss on extinguishment of debt				(3,349)
Income from continuing operations before income taxes	7,639	74,127	44,237	239,571
Income tax (benefit) provision	(59)	21,510	9,066	72,657
Income from continuing operations	7,698	52,617	35,171	166,914
Discontinued operations:
Income (loss) from discontinued operations before income taxes	5,396	(23,839)	6,534	(91,574)
Income tax provision (benefit)	1,341	(7,085)	1,722	(32,371)
Income (loss) from discontinued operations	4,055	(16,754)	4,812	(59,203)
Net income	$ 11,753	$ 35,863	$ 39,983	$ 107,711
Basic:
Continuing operations (in dollars per share)	$ 0.20	$ 1.34	$ 0.92	$ 4.16
Discontinued operations (in dollars per share)	$ 0.10	$ (0.43)	$ 0.12	$ (1.48)
Income (in dollars per share)	$ 0.30	$ 0.91	$ 1.04	$ 2.68
Diluted :
Continuing operations (in dollars per share)	$ 0.20	$ 1.31	$ 0.90	$ 3.98
Discontinued operations (in dollars per share)	$ 0.10	$ (0.41)	$ 0.13	$ (1.41)
Income (in dollars per share)	$ 0.30	$ 0.90	$ 1.03	$ 2.57
Weighted average shares outstanding:
Basic (in shares)	38,577	39,335	38,402	40,132
Diluted (in shares)	39,169	40,069	39,006	41,941