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PENSION PLAN (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Amounts recognized in the consolidated balance sheets [Abstract]        
Noncurrent liabilities $ (5,368) $ (5,549) $ (5,299)  
Amounts recognized in accumulated other comprehensive loss [Abstract]        
Accumulated loss (8,467) (9,438) (9,833)  
Deferred income taxes 2,366 2,366 2,366  
Accumulated other comprehensive loss (6,101) (7,072) (7,467)  
Accumulated benefit obligation 22,900 23,300    
COMPONENTS OF NET PERIODIC BENEFIT COST [Abstract]        
Service cost 28 28 23  
Interest cost 888 884 892  
Expected return on plan assets (1,118) (1,243) (1,287)  
Recognized net actuarial loss 991 976 513  
Net periodic benefit cost 789 645 141  
Amortization of estimated net loss, transition obligation and prior service cost from accumulated other comprehensive income into net periodic benefit cost 900      
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 17,548 $ 17,792 $ 19,000 $ 18,792
Fair value of total plan assets by major asset category 100.00% 100.00% 100.00%  
Weighted-average assumptions used to determine benefit obligations [Abstract]        
Discount rate 3.81% 3.94% 3.66%  
Rate of compensation increase 2.50% 2.50% 1.13%  
Weighted-average assumptions used to determine net periodic pension cost [Abstract]        
Pension contributions $ 0 $ 0    
Expected benefit payments for the plan [Abstract]        
Maximum contribution by employee specified as percentage of compensation 25.00%      
Additional contribution by employer 30.00%      
Maximum percentage of compensation contributed by employer as matching contribution 6.00%      
Compensation expense for the 401(k) plan $ 700 700 $ 1,600  
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 17,548 17,792    
Significant Other Observable Inputs (Level 2) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Significant Unobservable Inputs (Level 3) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Equity Securities [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 8,509 $ 8,473    
Fair value of total plan assets by major asset category 49.00% 48.00% 50.00%  
Expected benefit payments for the plan [Abstract]        
Target plan asset allocations, minimum 30.00%      
Target plan asset allocations, maximum 70.00%      
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 8,509 $ 8,473    
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Fixed Income [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 6,548 $ 5,943    
Fair value of total plan assets by major asset category 37.00% 33.00% 32.00%  
Expected benefit payments for the plan [Abstract]        
Target plan asset allocations, minimum 20.00%      
Target plan asset allocations, maximum 60.00%      
Fixed Income [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 6,548 $ 5,943    
Fixed Income [Member] | Significant Other Observable Inputs (Level 2) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Fixed Income [Member] | Significant Unobservable Inputs (Level 3) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
International Equities [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 2,484 $ 3,288    
Fair value of total plan assets by major asset category 14.00% 19.00% 18.00%  
International Equities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 2,484 $ 3,288    
International Equities [Member] | Significant Other Observable Inputs (Level 2) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
International Equities [Member] | Significant Unobservable Inputs (Level 3) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Cash and Equivalents [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 7 $ 88    
Fair value of total plan assets by major asset category 0.00% 0.00% 0.00%  
Expected benefit payments for the plan [Abstract]        
Target plan asset allocations, minimum 0.00%      
Target plan asset allocations, maximum 10.00%      
Cash and Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 7 $ 88    
Cash and Equivalents [Member] | Significant Other Observable Inputs (Level 2) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets 0 0    
Cash and Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member]        
Plan assets using the fair value hierarchy [Abstract]        
Fair value of plan assets $ 0 $ 0    
Pension Plan [Member]        
Weighted-average assumptions used to determine net periodic pension cost [Abstract]        
Discount rate 3.81% 3.94% 4.46%  
Rate of compensation increase 2.50% 2.50% 1.13%  
Long-term rate of return 6.25% 6.50% 7.00%  
Expected benefit payments for the plan [Abstract]        
2017 $ 1,257      
2018 1,323      
2019 1,357      
2020 1,369      
2021 1,376      
Years 2022-2026 $ 7,039