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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Income Taxes [Line Items]    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00%  
Unamortized Amount Of Tax Basis In Additional Tax Goodwill $ 2,936  
Operating Loss Carryforwards 451,853  
Operating Loss Carryforwards, Expiration Dates 10-1-2022  
Reorganization Of Goodwill Excess Tax Basis 23,902  
Cash Tax Benefit Attributable To Additional Goodwill Amortization 72  
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound 58  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 15 178
Internal Revenue Service (IRS) [Member]
    
Income Taxes [Line Items]    
Cash Tax Reduction Attributable To Additional Goodwill Amortization 11,443  
Operating Loss Carryforwards Attributable To Additional Goodwill Amortization 138,892  
Tax Credit Carryforward, Limitations on Use The annual limitation under Section 382 on the utilization of federal net operating losses was approximately $20,000 for the first five tax years subsequent to the change in ownership and $16,000 thereafter.  
Carryforward Amount Excluded From Limitations on Use 280,934  
Valuation Allowance, Deferred Tax Asset, Change in Amount 117,343  
DeferredTaxAssetOffsetByDeferredTaxLiability 457  
State and Local Jurisdiction [Member]
    
Income Taxes [Line Items]    
Operating Loss Carryforwards Attributable To Additional Goodwill Amortization 13,622  
Operating Loss Carryforwards 139,654  
Valuation Allowance, Deferred Tax Asset, Change in Amount $ 4,503