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Disclosure about Fair Value of Financial Instruments - Balances of Assets Measured at Fair Value on a Recurring Basis by Level Within Hierarchy (Detail) (Interest Rate Caps [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balances of assets measured at fair value on a recurring basis by level within hierarchy    $ 1
Level 1 Inputs [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balances of assets measured at fair value on a recurring basis by level within hierarchy      
Level 2 Inputs [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balances of assets measured at fair value on a recurring basis by level within hierarchy    1
Level 3 Inputs [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balances of assets measured at fair value on a recurring basis by level within hierarchy