DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Notional amount	$ 255,600	$ 324,200
Difference in carrying value and fair value, reflecting a loss		$ 1,200
Average maturity	42 months 3 days	49 months 15 days
Average interest receive rate (in hundredths)	2.60%	2.50%
Average interest pay rate (in hundredths)	5.60%	5.60%
Forward Commitments [Member]
Derivative [Line Items]
Notional amount	$ 211,200	$ 155,800
Difference in carrying value and fair value, reflecting a gain	109
Commitments To Fund Fixed Rate Mortgage Loans [Member]
Derivative [Line Items]
Notional amount	142,100	85,200
Difference in carrying value and fair value, reflecting a gain	$ 3,400	$ 2,100