Participations Sold - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Participants
Participating Mortgage Loans [Line Items]
Number of loan participations sold	1
Participation sold, balance	$ 90,000
Participation sold, cash coupon rate, description	LIBOR plus 5.12%
Participation sold, weighted average yield, description	LIBOR plus 5.26%
LIBOR [Member]
Participating Mortgage Loans [Line Items]
Participation sold, cash coupon rate	5.12%
Participation sold, weighted average yield	5.26%