EMPLOYEE BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2017

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The net pension and postretirement benefit costs that have been recorded are shown in the following table:

	Pension						Postretirement
	Three Months Ended June 30,						Three Months Ended June 30,
	2017			2016			2017		2016
Components of Net Periodic Benefit Cost
Service cost	—				$327			$13		$2
Interest cost	815			869			2		12
Expected return on plan assets (a)	(945		)	(1,008		)	—		—
Amortization of losses	116			632			—		—
Net periodic benefit (gain) cost		($14	)		$820			$15		$14

	Pension						Postretirement
	Six Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017		2016
Components of Net Periodic Benefit Cost
Service cost	—				$653			$26		$3
Interest cost	1,630			1,737			3		24
Expected return on plan assets (a)	(1,891		)	(2,015		)	—		—
Amortization of losses (gains)	233			1,261			—		(12		)
Net periodic benefit (gain) cost		($28	)		$1,636			$29		$15

(a) The weighted-average expected long-term rate of return on plan assets used in computing 2017 net periodic benefit cost for pension benefits is 7.2 percent.