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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Dec. 31, 2010
Operating Loss Carryforwards [Line Items]    
Loss carry-forwards exceed   $ 3,400,000
Percentage of payment to IRS, Tier C 12.50%  
Percentage of payment to IRS, Tier D 17.50%  
Valuation allowance 3,134,054  
Expiration period Expiring in 2029 and will fully expire in 2034  
Operating tax carryforward expiration year start 2029  
Operating tax carryforward expiration year end 2034  
Net operating loss carryforwards exceeds   3,400,000
Relinquishment of carry-forward of loss 1,059,988  
Net operating loss will be reduced for cancellation of indebtedness income and reduction of interest expense 816,380  
U. S. federal net operating tax [Member]
    
Operating Loss Carryforwards [Line Items]    
Net operating tax carryforward 7,107,171  
Ambac Assurance [Member]
    
Operating Loss Carryforwards [Line Items]    
Potential payment to outstanding disputes 100,000  
Ambac [Member]
    
Operating Loss Carryforwards [Line Items]    
Potential payment to outstanding disputes $ 1,900