Debt Obligations - Repurchase Obligations Outstanding (Parenthetical) (Detail) (Repurchase Agreements [Member]) In Thousands, unless otherwise specified				12 Months Ended
	Dec. 31, 2013 Revolving Repurchase Facilities [Member] JP Morgan [Member] USD ($)	Dec. 31, 2013 Revolving Repurchase Facilities [Member] JP Morgan [Member] EUR (€)	Dec. 31, 2013 Revolving Repurchase Facilities [Member] Maximum [Member] JP Morgan [Member] USD ($)	Dec. 31, 2013 Asset-Specific Repurchase Agreements [Member] JP Morgan [Member] USD ($)	Dec. 31, 2013 Asset-Specific Repurchase Agreements [Member] Wells Fargo [Member] Agreement
Line of Credit Facility [Line Items]
Facility size	$ 252,500	€ 153,000	$ 250,000	$ 112,000
Repurchase Date				Jun. 27, 2014
Number of asset-specific repurchase agreements					4