Benefit Plans - Qualified and Non-Qualified Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Pension
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 19,777	$ (14,111)
Amortization of prior service cost	(135)	(135)
Amortization of actuarial (loss) gain	(1,000)	(1,538)
Total recognized in other comprehensive loss	18,642	(15,784)
Total recognized in net periodic benefit (income) cost and other comprehensive loss (before tax)	4,292	$ (26,965)
OPEB
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(976)
Amortization of prior service cost	0
Amortization of actuarial (loss) gain	95
Total recognized in other comprehensive loss	(881)
Total recognized in net periodic benefit (income) cost and other comprehensive loss (before tax)	$ (802)