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EMPLOYEE BENEFIT PLANS (Details Textual)
 12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Future Amortization of Gain (Loss) [1],[2] $ 946,000 $ 813,000  
Defined Contribution Plan Maximum Annual Contribution Per Union Employee Percent 4.00% 4.00% 4.00%
Defined Contribution Plan Amount Of Entity Common Stock And Securities Held $ 1,400,000    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match   6.00% 2.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 4.00% 3.00% 1.00%
Defined Contribution Plan, Cost Recognized $ 433,000 $ 387,000  
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan Minimum Number Of Annual Employee Hours 1,000    
Defined Benefit Plan, Amount of Employer and Related Party Securities Included in Plan Assets $ 666,000    
Defined Benefit Plan Maximum Percent Of Assets Comprised Of Entity Common Stock 10.00%    
Defined Benefit Plan Vesting Period 5 years    
Defined Benefit Plan, Future Amortization of Gain (Loss) $ 1,051,000    
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 8.00% 8.00% 8.00%
Defined Benefit Plan Percent Of Assets Comprised Of Entity Common Stock 2.90%    
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year $ 3,000,000    
Pension Plans, Defined Benefit [Member] | Equity Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations 60.00%    
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum 50.00%    
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum 60.00%    
Pension Plans, Defined Benefit [Member] | Debt Securities [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum 40.00%    
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum 50.00%    
[1] Amounts in parentheses indicate credits.
[2] These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost (see Note 14 for additional details).