OTHER EQUITY SECURITIES - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Other Assets [Line Items]
Capital stock par value	$ 100
Book value of investment in FHLB stock	$ 25,500,000	$ 28,400,000
Dividend income from FHLB stock	1,200,000	1,400,000	1,400,000
Carrying value of other equity security	300,000	300,000
Gain Loss On Sale Of Securities Net	$ 262,000	$ (42,000)	$ 36,000