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FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for off-balance sheet credit exposures	$ 455		$ 455		$ 485
Amount expensed to (recovered from) calculation of reserves based on historical loss experience	(45)	$ (245)	(30)	$ (184)
Mortgage Partnership Finance Program
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Sum of total loans sold under the MPF Program			45,496		51,773
Limited recourse debt	8,230		8,230		$ 8,508
Other expenses, loss estimate	$ (32)	$ 162	$ 127	$ 131