ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ 1,666	$ (4,898)	$ 2,886	$ (3,070)
Other comprehensive loss before reclassifications	(9,478)	(1,087)	(10,469)	(2,915)
Amounts reclassified from AOCI	(21)	0	(250)	0
Net other comprehensive loss	(9,499)	(1,087)	(10,719)	(2,915)
Ending balance	(7,833)	(5,985)	(7,833)	(5,985)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net Gain on Sale of Securities Available for Sale	33	0	392	0
Income tax expense	816	1,340	1,299	2,030
Total reclassifications, net of tax	21	0	250	0
Unrealized gains and Losses on available-for-sale securities [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	9,333	10,300	10,553	11,873
Other comprehensive loss before reclassifications	(9,201)	(1,087)	(10,192)	(2,660)
Amounts reclassified from AOCI	(21)	0	(250)	0
Net other comprehensive loss	(9,222)	(1,087)	(10,442)	(2,660)
Ending balance	111	9,213	111	9,213
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net Gain on Sale of Securities Available for Sale	33		392
Income tax expense	(12)		(142)
Total reclassifications, net of tax	21	0	250	0
Pension and postretirement plan items [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(7,667)	(15,198)	(7,667)	(14,943)
Other comprehensive loss before reclassifications	(277)	0	(277)	(255)
Amounts reclassified from AOCI	0	0	0	0
Net other comprehensive loss	(277)	0	(277)	(255)
Ending balance	(7,944)	(15,198)	(7,944)	(15,198)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications, net of tax	$ 0	$ 0	$ 0	$ 0