Components of Net Periodic Benefit Cost (Tables)

3 Months Ended

Mar. 31, 2019

Retirement Benefits [Abstract]

Net Periodic Benefit Cost (Increase)

Net periodic (increase) benefit cost for pension benefits and other post-retirement benefits for the three months ended March 31, 2019 and 2018 includes the following components (in thousands):

	Three months ended March 31,
	Pension benefits			Other post-retirement benefits
	2019		2018	2019	2018
Service cost	$	—	—	20	29
Interest cost	300		274	210	197
Expected return on plan assets	(641)		(693)	—	—
Amortization of prior service cost	—		—	—	—
Amortization of the net loss (gain)	254		199	(207)	(99)
Net periodic (increase) benefit cost	$	(87)	(220)	23	127