Loans Receivable - Activity Relating to Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Oct. 02, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan originations	$ 71,000	$ 2,327,913
Deferred origination fees and expenses		(25,402)
Amortization of deferred fees and expenses		5,965	180	1,773
Unrealized gain on foreign currency translation		(798)
Gross Book Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance		164,180
Loan originations		2,325,433
Additional fundings		2,480
Loan satisfactions		(260,400)
Partial loan repayments and sales		(141,150)
Deferred origination fees and expenses		(25,402)
Amortization of deferred fees and expenses		5,965
Unrealized gain on foreign currency translation		797
Reclassification to loans held-for-sale		(6,601)
Balance		2,065,302
Provision for Loan Losses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance		(22,680)
Loan originations
Additional fundings
Loan satisfactions
Partial loan repayments and sales
Deferred origination fees and expenses
Amortization of deferred fees and expenses
Unrealized gain on foreign currency translation
Reclassification to loans held-for-sale		4,601
Balance		(18,079)
Net Book Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance		141,500
Loan originations		2,325,433
Additional fundings		2,480
Loan satisfactions		(260,400)
Partial loan repayments and sales		(141,150)
Deferred origination fees and expenses		(25,402)
Amortization of deferred fees and expenses		5,965
Unrealized gain on foreign currency translation		797
Reclassification to loans held-for-sale		(2,000)
Balance		$ 2,047,223