BENEFIT PLANS (Narrative) (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 entity
BENEFIT PLANS [Abstract]
Number of funded, noncontributory defined benefit pension plans		3
Number of unfunded, nonqualified pension plans		3
Discretionary qualified plan contribution | $	$ 10,600,000
Normal retirement age		65 years