Components of Net Periodic Benefit Cost (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Net Periodic Benefit Cost (Increase)

Net periodic (benefit) increase cost for pension benefits and other post-retirement benefits for the three months ended March 31, 2021 and 2020 includes the following components (in thousands):

	Three months ended March 31,
	Pension benefits			Other post-retirement benefits
	2021		2020	2021	2020
Service cost	$	—	—	9	20
Interest cost	198		250	106	178
Expected return on plan assets	(807)		(737)	—	—
Amortization of prior service cost	—		—	—	—
Amortization of the net loss (gain)	118		174	(268)	(62)
Net periodic (benefit) increase cost	$	(491)	(313)	(153)	136