Pension and Postretirement Benefits Other Than Pension Plans (Tables)

6 Months Ended

Jun. 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 (benefit) 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				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Interest cost	$	675	$	878	$	1,351	$	1,756
Expected return on plan assets		(1,054)		(943)		(2,109)		(1,887)
Amortization of net actuarial loss		281		286		563		573
Total net periodic pension expense (benefit)	$	(98)	$	221	$	(195)	$	442

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				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Interest cost	$	18	$	25	$	35	$	50
Amortization of net actuarial loss		64		62		127		123
Amortization of prior service credit		(329)		(329)		(657)		(657)
Total net postretirement benefit income	$	(247)	$	(242)	$	(495)	$	(484)