Pension and Other Post-Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

The Company's net periodic benefit costs for its defined benefit pension plans and post-retirement healthcare plans for both continuing and discontinued operations are as follows (in thousands):

	Three Months Ended June 30,												Six Months Ended June 30,
	Pension Plans						Post-Retirement Healthcare Plan						Pension Plans						Post-Retirement Healthcare Plan
	2017			2016			2017			2016			2017			2016			2017			2016
Service cost	$	—		$	—		$	39		$	31		$	—		$	—		$	78		$	62
Interest cost	8,775			8,968			36			42			17,550			17,936			72			84
Expected return on plan assets	(10,930		)	(10,264		)	—			—			(21,859		)	(20,528		)	—			—
Amortization of prior service cost	—			—			(13		)	(26		)	—			—			(26		)	(52		)
Amortization of net loss	1,937			3,368			71			40			3,874			6,736			142			80
Net periodic benefit (income) cost	$	(218	)	$	2,072		$	133		$	87		$	(435	)	$	4,144		$	266		$	174