ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI) (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
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	$ (7,833)	$ (5,985)	$ 2,886	$ (3,070)
Other comprehensive loss (income) before reclassifications	(1,443)	2,260	(11,912)	(655)
Amounts reclassified from AOCI	(2)	103	(252)	103
Net other comprehensive loss (income)	(1,445)	2,363	(12,164)	(552)
Ending balance	(9,278)	(3,622)	(9,278)	(3,622)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) on sale of securities available for sale	3	(162)	395	(162)
Income tax expense (benefit)	1,557	(3,975)	2,856	(1,945)
Total reclassifications, net of tax	2	(103)	252	(103)
Unrealized gains and Losses on available-for-sale securities [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	111	9,213	10,553	11,873
Other comprehensive loss (income) before reclassifications	(1,443)	3,376	(11,635)	716
Amounts reclassified from AOCI	(2)	103	(252)	103
Net other comprehensive loss (income)	(1,445)	3,479	(11,887)	819
Ending balance	(1,334)	12,692	(1,334)	12,692
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gain (loss) on sale of securities available for sale	3		395
Income tax expense (benefit)	(1)		(143)
Total reclassifications, net of tax	2	(103)	252	(103)
Pension and postretirement plan items [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Beginning balance	(7,944)	(15,198)	(7,667)	(14,943)
Other comprehensive loss (income) before reclassifications	0	(1,116)	(277)	(1,371)
Amounts reclassified from AOCI	0	0	0	0
Net other comprehensive loss (income)	0	(1,116)	(277)	(1,371)
Ending balance	(7,944)	(16,314)	(7,944)	(16,314)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications, net of tax	$ 0	$ 0	$ 0	$ 0