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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Abstract]      
Beginning balance $ (2,168,000) $ (15,412,000) $ (23,378,000)
Defined benefit pension plans [Abstract]      
Net gain (loss) during year (230,000) (10,974,000) 10,943,000
Amortization of prior service cost [1] 432,000 210,000 210,000
Amortization of net loss [1] 169,000 244,000 1,695,000
Settlement loss recognized [2] 0 20,810,000 0
Defined benefit pension plan 371,000 10,290,000 12,848,000
Tax expense (benefit) 141,000 (2,954,000) 4,882,000
Total other comprehensive income 230,000 13,244,000 7,966,000
Ending balance (1,938,000) $ (2,168,000) $ (15,412,000)
Curtailment loss $ 222,000    
[1] These amounts are included in the computation of net periodic pension costs and were reclassified to selling, general and administrative costs. For 2015, this includes $222,000 in curtailment loss on the SERP.
[2] This amount was reclassified and is part of the line item "pension settlement expense.