Defined Benefit Plans - Net Periodic Pension Costs (Details) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	$ 120	$ 160	$ 240	$ 360
Interest costs	310	230	630	460
Expected return on plan assets	(520)	(420)	(1,050)	(830)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	1,020	0	1,020	150
Amortization of net (gain)/loss	40	150	70	290
Net periodic benefit cost	$ 970	$ 120	$ 910	$ 430