Defined Benefit Plans - Net Periodic Pension Costs (Details) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	$ 170	$ 330	$ 530	$ 980
Interest costs	230	200	690	600
Expected return on plan assets	(430)	(380)	(1,260)	(1,160)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0	150	0
Amortization of net (gain)/loss	140	220	430	680
Net periodic benefit cost	$ 110	$ 370	$ 540	$ 1,100