Secured Financings - Summary of Statistics for Asset-Specific Repurchase Agreements (Parenthetical) (Detail) (Assets Sold Under Agreements To Repurchase Carrying Amounts [Member])	9 Months Ended
Sep. 30, 2014
Assets Sold Under Agreements To Repurchase Carrying Amounts [Member]
Participating Mortgage Loans [Line Items]
LIBOR basis spread on debt obligation	As of September 30, 2014, all of our asset-specific repurchase agreements are indexed to one-month USD LIBOR. In addition to cash coupon, all-in yield / cost includes the amortization of deferred origination fees / financing costs.

Secured Financings - Summary of Statistics for Asset-Specific Repurchase Agreements (Parenthetical) (Detail) (Assets Sold Under Agreements To Repurchase Carrying Amounts [Member])

9 Months Ended

Sep. 30, 2014

Assets Sold Under Agreements To Repurchase Carrying Amounts [Member]

Participating Mortgage Loans [Line Items]

LIBOR basis spread on debt obligation

As of September 30, 2014, all of our asset-specific repurchase agreements are indexed to one-month USD LIBOR. In addition to cash coupon, all-in yield / cost includes the amortization of deferred origination fees / financing costs.