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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)
 12 Months Ended
Dec. 31, 2017
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following summarizes the changes in the balance and the reclassifications out of accumulated other comprehensive income (loss) on our Consolidated Balance Sheets to the Consolidated Statements of Comprehensive Income (amounts in thousands):

  
Year Ended December 31,
 
  
2017
  
2016
  
2015
 
Beginning balance
 
$
(1,830
)
 
$
(1,938
)
 
$
(2,168
)
Other comprehensive income (loss)
            
Defined benefit pension plan:
            
Net loss (gain) during year
  
(509
)
  
72
   
(230
)
Amortization of prior service cost(1)
  
—
   
—
   
432
 
Amortization of net loss(1)
  
90
   
102
   
169
 
   
(419
)
  
174
   
371
 
Tax expense (benefit)
  
(105
)
  
66
   
141
 
Total other comprehensive income (loss)
  
(314
)
  
108
   
230
 
Ending balance
 
$
(2,144
)
 
$
(1,830
)
 
$
(1,938
)

(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.