Schedule of Real Estate Owned (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Real Estate Properties [Line Items]
Real estate owned	$ 8,163	$ 6,699
One-to-four units
Real Estate Properties [Line Items]
Real estate owned	0	759
Commercial real estate
Real Estate Properties [Line Items]
Real estate owned	3,090	3,374
Church
Real Estate Properties [Line Items]
Real estate owned	5,619	2,913
Valuation allowance for unrealized losses
Real Estate Properties [Line Items]
Real estate owned	$ 546	$ 347