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EMPLOYEE BENEFIT PLAN (Detail Textuals) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2017
Dec. 31, 2016
Multiple Employers Retirement Income Plan      
Defined Benefit Plan Disclosure [Line Items]      
Contribution by employer for retirement income plan $ 900,000    
Non-qualified Supplemental Retirement Plan ("SERP")      
Defined Benefit Plan Disclosure [Line Items]      
SERP assets   $ 19,313,000 $ 18,367,000