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Notes Payable - Additional Information (Detail) (USD $)
 6 Months Ended 12 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2014
13% Senior First Lien Notes [Member]
Jun. 30, 2013
13% Senior First Lien Notes [Member]
Dec. 31, 2013
13% Senior First Lien Notes [Member]
Jun. 30, 2014
13% Senior Second Lien Notes [Member]
Jun. 30, 2014
PIK Notes [Member]
Dec. 31, 2013
PIK Notes [Member]
Jun. 30, 2014
Runoff Notes [Member]
Dec. 31, 2013
Runoff Notes [Member]
Debt Instrument [Line Items]                    
Note issued     $ 110,000,000     $ 20,000,000 $ 16,600,000 $ 13,900,000    
Notes maturity date     Mar. 19, 2030     Mar. 19, 2030        
Cash interest paid on Notes     4,200,000 6,700,000            
Outstanding amounts of notes 0               108,300,000 105,500,000
Principal payments     0   36,300,000          
Collateral Account used for future payments 79,900,000 100,000                
Principal and interest payments $ 79,900,000 $ 100,000