PENSION AND POSTRETIREMENT PLANS

9 Months Ended

Sep. 30, 2016

Pension and Other Postretirement Benefit Expense [Abstract]

PENSION AND POSTRETIREMENT PLANS

PENSION AND POSTRETIREMENT PLANS

A summary of the components of net periodic pension and postretirement benefit costs for the three and nine months ended September 30, 2016 and 2015 is presented below (in thousands):

	Pension Benefits						Postretirement Benefits
	Three Months Ended   September 30,						Three Months Ended   September 30,
	2016			2015			2016			2015
Service cost	$	566		$	484		$	3		$	3
Interest cost	1,662			1,673			19			19
Expected return on plan assets	(2,305		)	(2,395		)	—			—
Amortization of prior service credit	(64		)	(79		)	—			—
Amortization of transition asset	(78		)	(19		)	—			—
Settlement loss	765			—			—			—
Amortization of actuarial loss (gain)	951			772			(14		)	(13		)
Net periodic cost	$	1,497		$	436		$	8		$	9

	Pension Benefits						Postretirement Benefits
	Nine Months Ended   September 30,						Nine Months Ended   September 30,
	2016			2015			2016			2015
Service cost	$	1,695		$	1,475		$	9		$	9
Interest cost	5,010			5,024			57			56
Expected return on plan assets	(6,942		)	(7,208		)	—			—
Amortization of prior service credit	(191		)	(241		)	—			—
Amortization of transition asset	(234		)	(61		)	—			—
Settlement loss	765			—			—			—
Amortization of actuarial loss (gain)	2,850			2,334			(42		)	(38		)
Net periodic cost	$	2,953		$	1,323		$	24		$	27