Employee Benefit Plans

9 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

Employee Benefit Plans

EMPLOYEE BENEFIT PLANS

The following table summarizes key information related to the Company’s pension plans and other postretirement benefits:

	Pension Benefits						Pension Benefits						Other Postretirement Benefits						Other Postretirement Benefits
	Three Months Ended						Nine Months Ended						Three Months Ended						Nine Months Ended
	September 30,						September 30,						September 30,						September 30,
	2017			2016			2017			2016			2017			2016			2017			2016
Service cost — benefits earned during the period	$	141		$	137		$	423		$	411		$	2		$	1		$	4		$	3
Interest cost on projected benefit obligation	1,262			1,355			3,794			4,065			92			97			276			291
Expected return on assets	(1,356		)	(1,519		)	(4,068		)	(4,557		)	—			—			—			—
Amortization of net loss (gain)	503			464			1,506			1,392			(14		)	(19		)	(40		)	(57		)
Net expense	$	550		$	437		$	1,655		$	1,311		$	80		$	79		$	240		$	237