DERIVATIVE INSTRUMENTS AND OFFSETTING ASSETS AND LIABILITIES (Narrative) (Details) (USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Forward Commitments [Member]
Derivative [Line Items]
Notional amount	$ 151,300,000	$ 298,600,000
Difference in carrying value and fair value, reflecting a loss	1,000,000
Difference in carrying value and fair value, reflecting a gain		7,000,000
Loan/Lease Interest Rate Swaps [Member]
Derivative [Line Items]
Notional amount	352,700,000	465,000,000
Average maturity	53 months	57 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	114,200,000	173,700,000
Difference in carrying value and fair value, reflecting a gain	$ 3,500,000	$ 292,000