Employee Benefit Plans - Post-retirement Healthcare Plan - Components of Net Periodic Benefit Cost and Other Amounts Recognized in OCI (Details) - Postretirement Healthcare Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 40	$ 42	$ 26
Amortization of prior service cost	6	14	18
Net periodic pension cost, defined benefit pension plans	46	56	44
Net (gain)/loss	183	(66)	(51)
Total recognized in other comprehensive income	183	(66)	(51)
Total recognized in net periodic pension cost and other comprehensive income	$ 229	$ (10)	$ (7)