Pension Plan (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of net benefit cost

Net periodic pension cost consists of the following: 

	Three Months Ended March 31,
	2021		2020
Service cost	$	248	$	179
Interest cost on projected benefit obligation	451		639
Expected return on plan assets	(1,289)		(1,255)
Net amortization and deferral	832		705
Net periodic pension cost	$	242	$	268