Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2021

Compensation And Retirement Disclosure [Abstract]

Net periodic pension cost

Net periodic pension cost is as follows:

	For the Quarter Ended March 31,
	2021			2020
Interest cost	$	38		$	48
Expected return on assets		(48	)		(51	)
Amortization of net loss		21			20
Net periodic pension cost	$	11		$	17