Components of Net Periodic Benefit Cost - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 157	$ 297
Interest cost	956	706
Expected return on plan assets	(970)	(1,227)
Net amortization of net (gain) loss	188	315
Net periodic pension cost	331	91
Post-Retirement Health Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	8
Interest cost	38	28
Net amortization of net (gain) loss	(13)
Net periodic pension cost	$ 30	$ 36