EMPLOYEE BENEFIT PLAN (Detail Textuals) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Owned life insurance policy claims	$ 1,606,000	$ 2,218,000
Recorded tax-free gains	767,000	1,020,000
Multiple Employers Retirement Income Plan
Defined Benefit Plan Disclosure [Line Items]
Contribution by employer for retirement income plan		5,000,000	$ 0
Non-qualified Supplemental Retirement Plan ("SERP")
Defined Benefit Plan Disclosure [Line Items]
SERP assets	$ 26,344,000	$ 26,344,000		$ 23,463,000