Employee Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Employee Retirement Plans
Service cost	$ 118	$ 112
Interest cost	672	432
Expected return on plan assets	(577)	(752)
Net amortization and deferral	134	208
Pension expense	$ 347	$ 0