Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2020

General Discussion Of Pension And Other Postretirement Benefits [Abstract]

Pension [Table Text Block]

	Three Months Ended March 31,
					Other
	Pension Benefits				Postretirement Benefits
		2020		2019		2020		2019
Service cost	$	1,174	$	986	$	2	$	2
Interest cost		1,769		1,111		26		35
Expected return on plan assets		(1,959)		(984)		—		—
Settlement loss		22,667		—		—		—
Actuarial loss amortization		1,047		775		15		—
Prior service (credit) cost amortization		(40)		(42)		—		—
Total net periodic benefit cost	$	24,658	$	1,846	$	43	$	37