Pension and Other Postretirement Benefits (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Contribution expense	$ 3,030	$ 4,870	$ 5,475
Pensions [Member]
Defined Benefit Plan Disclosure [Line Items]
Total accumulated benefit obligation	382,769	395,663
Estimated future employer contributions in next fiscal year	7,143
Curtailment gain (loss)	668	(1,158)	133
Settlement gain (loss)	656	605	(205)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)	0	0	0
Settlement gain (loss)	$ 0	$ 0	$ 0
Health care cost trend rate assumed	6.98%	7.52%
Ultimate health care cost trend rate	4.00%
Equity Securities [Member] | Pensions [Member]
Defined Benefit Plan Disclosure [Line Items]
The weighted-average target investment allocations in equity securities	65.00%
Fixed Income Securities [Member] | Pensions [Member]
Defined Benefit Plan Disclosure [Line Items]
The weighted-average target investment allocations in equity securities	35.00%