EMPLOYEE BENEFIT PLANS (Details 7) - Pension Plans, Defined Benefit [Member]	Dec. 31, 2018	Dec. 31, 2017
ASSET CATEGORY:
Asset allocations	100.00%	100.00%
Cash and Cash Equivalents [Member]
ASSET CATEGORY:
Asset allocations	49.00%	0.00%
Domestic equities [Member]
ASSET CATEGORY:
Asset allocations	7.00%	12.00%
Mutual funds/ETFs [Member]
ASSET CATEGORY:
Asset allocations	42.00%	82.00%
International equities [Member]
ASSET CATEGORY:
Asset allocations	0.00%	4.00%
Corporate bonds [Member]
ASSET CATEGORY:
Asset allocations	2.00%	2.00%