Pension and Postretirement Benefits Other Than Pension Plans (Tables)

9 Months Ended

Sep. 30, 2020

Pension Plan [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Net Periodic Pension and Postretirement Benefit (Income) Expense

Net periodic pension expense reflected in other gains and (losses), net in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2020		2019		2020		2019
Interest cost	$	534	$	798	$	1,885	$	2,554
Expected return on plan assets		(962)		(935)		(3,071)		(2,822)
Amortization of net actuarial loss		340		293		903		866
Net settlement loss		1,343		1,577		1,343		1,577
Total net periodic pension expense	$	1,255	$	1,733	$	1,060	$	2,175

Postretirement Health Coverage [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Net Periodic Pension and Postretirement Benefit (Income) Expense

Net postretirement benefit income reflected in other gains and (losses), net in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2020		2019		2020		2019
Interest cost	$	17	$	26	$	52	$	76
Amortization of net actuarial loss		57		55		184		178
Amortization of prior service credit		(329)		(329)		(986)		(986)
Total net postretirement benefit income	$	(255)	$	(248)	$	(750)	$	(732)