ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (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	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), before Reclassification Adjustments and Tax [Abstract]
Unrealized gain (loss) on investment securities			$ (34,212)
Unrealized gain (loss) on cash flow hedges			(298)
Retirement obligation			11,719
Foreign Currency Translation			(21)
Total			(22,812)
Other Comprehensive Income (Loss) Reclassifications before Tax [Abstract]
Unrealized gain (loss) on investment securities			1,724
Unrealized gain (loss) on derivatives			(295)
Retirement obligation			(7,523)
Foreign Currency Translation			0
Total			(6,094)
Transactions Pre-tax
Unrealized gain (loss) on investment securities			(35,936)	2,671
Unrealized gain (loss) on derivatives			(3)	(292)
Unfunded pension obligation			19,242	1,814
Foreign currency translation			(21)	26
Total			(16,718)	4,219
Transactions Tax-effect
Unrealized gain (loss) on investment securities			13,366	(1,009)
Unrealized gain (loss) on derivatives			1	110
Unfunded pension obligation			(7,266)	(685)
Foreign currency translation			0	0
Total			6,101	(1,584)
Transactions Net of tax
Unrealized gain (loss) on investment securities	(4,003)	(934)	(22,570)	1,662
Unrealized gain (loss) on derivatives	(818)	(182)	(2)	(182)
Retirement obligation	1,166	419	11,976	1,129
Foreign currency translation	6	14	(21)	26
Other comprehensive (loss) income	(3,649)	(683)	(10,617)	2,635
Balances Net of tax
Unrealized gain (loss) on investment securities	(9,768)	14,331	(9,768)	14,331	12,802	12,669
Unrealized gain (loss) on cash flow hedges	(145)	(182)	(145)	(182)	(143)	0
Retirement obligation	(19,362)	(33,007)	(19,362)	(33,007)	(31,338)	(34,136)
Foreign currency translation	(19)	3	(19)	3	2	(23)
Total	$ (29,294)	$ (18,855)	$ (29,294)	$ (18,855)	$ (18,677)	$ (21,490)