ACCUMULATED OTHER COMPREHENSIVE INCOME AMOUNT RECLASSIFIED FROM ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Accumulated Comprehensive income reclassified from AOCI [Line Items]
Gains on sales of investment securities	$ 0	$ 2,617	$ 1,724	$ 2,617
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	105	106	317	316
Defined Benefit Plan, Amortization of Gains (Losses)	(582)	(780)	(2,128)	(2,130)
Pension settlement charges	(1,396)	0	(5,712)	0
Other Comprehensive Income, Reclassification, Amortization of Defined Benefit Plans items, Pre-tax			(7,523)
Total			(6,094)
Deposits [Member] | Cash Flow Hedging [Member] | Interest Expense | Interest Rate Contracts
Other Accumulated Comprehensive income reclassified from AOCI [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net			$ (295)