DERIVATIVE INSTRUMENTS AND OFFSETTING ASSETS AND LIABILITIES (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative [Line Items]
Difference in carrying value and fair value, reflecting a loss	$ 1,500,000
Difference in carrying value and fair value, reflecting a gain	5,200,000
Forward Commitments [Member]
Derivative [Line Items]
Notional amount	256,800,000	90,900,000
Difference in carrying value and fair value, reflecting a loss	1,500,000	159,000
Loan/Lease Interest Rate Swaps [Member]
Derivative [Line Items]
Notional amount	309,100,000	382,400,000
Average maturity	46 months	54 months
Average interest receive rate	2.50%	2.50%
Average interest pay rate	5.60%	5.60%
Fixed Rate Mortgages [Member]
Derivative [Line Items]
Notional amount	174,800,000	79,900,000
Difference in carrying value and fair value, reflecting a gain	$ 5,200,000	$ 1,200,000