PENSION AND POSTRETIREMENT PLANS (Tables)

3 Months Ended

Mar. 31, 2016

Pension and Other Postretirement Benefit Expense [Abstract]

Summary of the components of net periodic pension benefit costs

A summary of the components of net periodic pension and postretirement benefit costs for the three months ended March 31, 2016 and 2015 is presented below (in thousands):

	Pension Benefits						Postretirement Benefits
	Three Months Ended   March 31,						Three Months Ended   March 31,
	2016			2015			2016			2015
Service cost	$	559		$	493		$	3		$	3
Interest cost	1,672			1,673			19			19
Expected return on plan assets	(2,309		)	(2,400		)	—			—
Amortization of prior service credit	(63		)	(80		)	—			—
Amortization of transition asset	(77		)	(21		)	—			—
Amortization of actuarial loss (gain)	943			778			(14		)	(13		)
Net periodic cost	$	725		$	443		$	8		$	9