Pension and Other Post-Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [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
	2018			2017			2018		2017			2018			2017			2018		2017
Service cost	$	—		$	—		$	30	$	39		$	—		$	—		$	60	$	78
Interest cost	7,284			8,775			32		36			14,568			17,550			64		72
Expected return on plan assets	(10,523		)	(10,930		)	—		—			(21,046		)	(21,859		)	—		—
Amortization of prior service cost	—			—			—		(13		)	—			—			—		(26		)
Amortization of net (gain) loss	887			1,937			55		71			1,774			3,874			110		142
Net periodic benefit cost (income)	$	(2,352	)	$	(218	)	$	117	$	133		$	(4,704	)	$	(435	)	$	234	$	266