Supplemental Financial Information (Details 4) (USD $)	Dec. 22, 2010	Jun. 29, 2012 Successor [Member]	Sep. 30, 2011 Successor [Member]
Other current liabilities
Restructuring and reorganization liabilities		$ 4,630,000	$ 4,242,000
Impaired lease liabilities		715,000	1,090,000
Accrued technical licenses		2,499,000	3,948,000
Income tax liabilities		16,000	37,000
Deferred tax liabilities		327,000	9,277,000
Accrued customer rebates		5,698,000	11,306,000
Accrued interest		5,892,000	971,000
Environmental remediation reserve - short-term		1,152,000	1,001,000
Other		1,484,000	1,802,000
Total other current liabilities		22,413,000	33,674,000
Other liabilities
Restructuring and reorganization liabilities		22,370,000	26,768,000
Impaired lease liabilities		1,657,000	1,989,000
Deferred gain on sale of building	6,900,000
Deferred tax liability		16,635,000	10,616,000
Income tax liabilities		5,069,000	7,174,000
Accrued technical licenses		578,000	1,498,000
Retirement plans		2,443,000	3,076,000
Environmental remediation reserve - long-term		2,569,000	2,756,000
Other		2,477,000	2,678,000
Total other liabilities		$ 53,798,000	$ 56,555,000