v2.4.0.8
Financing Instruments - Summary of Financing Receivables (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]    
Loan to joint venture $ 9,830 $ 9,830
Total loans and financing receivables 132,671 129,215
Collateral [Member] | Non-Performing [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Investment in term loans 122,841 119,385
Other internal metrics [Member] | Performing [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Loan to joint venture $ 9,830 $ 9,830