Pension And Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Pension And Postretirement Benefits

Pension and postretirement benefit costs included in operating expenses [Table Text Block]

	Three months ended
	March 31,
	2019		2018
Pension cost:
Service cost – benefits earned during the period	$	240	$	291
Interest cost on projected benefit obligation		549		487
Expected return on assets		(851)		(760)
Amortization of prior service credit		(33)		(30)
Actuarial (gain) loss		432		-
Net pension (credit) cost	$	337	$	(12)
Postretirement cost:
Service cost – benefits earned during the period	$	18	$	29
Interest cost on accumulated postretirement benefit obligation		186		191
Expected return on assets		(56)		(77)
Amortization of prior service credit		(426)		(397)
Actuarial (gain) loss		-		(930)
Net postretirement (credit) cost	$	(278)	$	(1,184)
Combined net pension and postretirement (credit) cost	$	59	$	(1,196)