Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended		12 Months Ended
	Sep. 30, 2011 Successor	Apr. 19, 2011 Predecessor	Oct. 01, 2010 Predecessor	Oct. 02, 2009 Predecessor
Net revenues	$ 72,930	$ 93,111	$ 240,726	$ 208,427
Cost of goods sold	57,925	39,849	94,157	86,674
Gross margin	15,005	53,262	146,569	121,753
Operating expenses:
Research and development	25,803	30,932	55,745	51,351
Selling, general and administrative	15,417	24,155	48,249	62,740
Amortization of intangible assets	9,139	621	1,249	2,976
Gain on sale of intellectual property		(1,249)		(12,858)
Asset impairments	41,058			5,672
Special charges	15,237	20,890	837	18,983
Total operating expenses	106,654	75,349	106,080	128,864
Operating (loss) income	(91,649)	(22,087)	40,489	(7,111)
Interest expense	6,963	12,278	30,072	34,693
Other expense (income), net	9,393	8,423	(12,455)	(5,025)
(Loss) income from continuing operations before income taxes and income (loss) on equity method investments	(108,005)	(42,788)	22,872	(36,779)
Income tax (benefit) provision	(2,595)	380	567	871
(Loss) income from continuing operations before income (loss) on equity method investments	(105,410)	(43,168)	22,305	(37,650)
Income (loss) on equity method investments	429	1,495	(66)	(2,807)
(Loss) income from continuing operations	(104,981)	(41,673)	22,239	(40,457)
Gain on sale of discontinued operations				39,170
Loss from discontinued operations, net of tax	(2,268)	(461)	(2,005)	(17,521)
Net (loss) income	$ (107,249)	$ (42,134)	$ 20,234	$ (18,808)
(Loss) income per share from continuing operations - basic		$ (0.51)	$ 0.31	$ (0.81)
(Loss) income per share from continuing operations - diluted		$ (0.51)	$ 0.30	$ (0.81)
Gain per share from sale of discontinued operations - basic and diluted		$ 0.00	$ 0.00	$ 0.78
Loss per share from discontinued operations - basic and diluted		$ 0.00	$ (0.03)	$ (0.35)
Net (loss) income per share - basic		$ (0.51)	$ 0.28	$ (0.38)
Net (loss) income per share - diluted		$ (0.51)	$ 0.27	$ (0.38)
Shares used in basic per-share computations		81,996	72,903	49,856
Shares used in diluted per-share computations		81,996	73,708	49,856