Risk Management and Derivative Instruments - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013 Interest Rate Swap	Mar. 31, 2014 Interest Rate Swap	Dec. 31, 2013 Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivatives, notional amount			$ 50,000,000
Derivatives, maturity date			Sep. 27, 2018
Derivatives, fair values				9,000	226,000
Percentage of properties securing loan held for sale	81.70%
Derivative assets	4,500,000
Derivative liabilities	64,000
Bank forward commitments outstanding	239,300,000
Committed fund loans for borrowers	141,900,000
Net losses related to free-standing derivative instruments used for risk management	$ 3,600,000	$ 0