Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Reconciliation of Residual Assets (Detail)

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Fair Value Measurements - Schedule of Reconciliation of Residual Assets (Detail) (Predecessor [Member], USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Predecessor [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, December 31, 2012 $ 4,638,579  
Accretion 127,275  
Collections (121,405)  
Fair value adjustment (208,250) (147,486)
Balance, March 31, 2013 $ 4,436,199