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ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Unrealized loss on available-for-sale securities [Member]
Dec. 31, 2012
Unrealized loss on available-for-sale securities [Member]
Jun. 30, 2013
Net unrealized loss on retirement plan [Member]
Dec. 31, 2012
Net unrealized loss on retirement plan [Member]
Jun. 30, 2013
Net unrealized loss on retirement plan [Member]
Reclassification out of AOCI [Member]
Jun. 30, 2013
Net unrealized loss on retirement plan [Member]
Reclassification out of AOCI [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]                    
Balance January 1, 2013     $ (5,702)     $ (18)   $ (5,684)    
Other comprehensive income before reclassification 36       36   0      
Amounts reclassified from accumulated other comprehensive income 339       0   339      
TOTAL OTHER COMPREHENSIVE INCOME 209 214 375 258 36   339      
Balance June 30, 2013 (5,327)   (5,327)   18 (18) (5,345) (5,684)    
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax [Abstract]                    
Amortization of prior service cost                 146 292
Amortization of actuarial loss                 24 47
Total                 $ 170 $ 339