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EMPLOYEE RETIREMENT PLANS (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 100.00% 100.00%    
Defined Benefit Plan Percentage Of Minimum Fund Maintenance 80.00%      
Defined Contribution Plan Employer Contribution Amount $ 417,000 $ 350,000 $ 302,000  
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 7.50%      
Defined Benefit Plan, Future Amortization of Unrecognized Loss $ 544,000      
Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) 63,000      
Defined Benefit Plan, Benefits Paid 1,900,000      
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months 450,000      
Defined Benefit Plan, Effect of Plan Amendment on Net Periodic Benefit Cost $ 522,000      
Scenario, Forecast [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Effect of Plan Amendment on Net Periodic Benefit Cost       $ 2,100,000
Pension Plan, Defined Benefit [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Accumulated Benefit Obligation   $ 43,700,000    
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 7.50% 7.50% 7.50%  
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Tax $ 5,373,000 $ 6,631,000    
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax 0 0    
Defined Benefit Plan, Benefits Paid 3,943,000 1,845,000    
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months $ 2,308,000      
Supplemental Employee Retirement Plan, Defined Benefit [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Accumulated Benefit Obligation   $ 14,200,000    
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets 0.00% 0.00% 0.00%  
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Tax $ 1,802,000 $ 1,808,000    
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax 91 270,000    
Defined Benefit Plan, Benefits Paid 386,000 $ 350,000    
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months $ 409,000      
Minimum [Member] | Equity Securities [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 20.00%      
Minimum [Member] | Fixed Income Securities [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 20.00%      
Minimum [Member] | Other securuties [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 0.00%      
Maximum [Member] | Equity Securities [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 80.00%      
Maximum [Member] | Fixed Income Securities [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 80.00%      
Maximum [Member] | Other securuties [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Defined Benefit Plan, Actual Plan Asset Allocations 20.00%