Employee Benefit Plans (Amounts Recognized Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), before Income Taxes [Roll Forward]
Accumulated other comprehensive income (loss)	$ (21,461)	$ (29,305)
Amortization of prior service costs	8	4
Effect of settlement		(48)
Amortization of loss (gain)	1,605	1,921
Net (loss) gain arising during the year	(2,031)	5,967	$ (2,503)
Accumulated other comprehensive income (loss)	(21,879)	(21,461)	(29,305)
Pension Benefits
Accumulated Other Comprehensive Income (Loss), before Income Taxes [Roll Forward]
Accumulated other comprehensive income (loss)	(20,817)	(28,199)
Amortization of prior service costs	0	0
Effect of settlement		0
Amortization of loss (gain)	1,636	1,835
Net (loss) gain arising during the year	(3,486)	5,547
Accumulated other comprehensive income (loss)	(22,667)	(20,817)	(28,199)
Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss), before Income Taxes [Roll Forward]
Accumulated other comprehensive income (loss)	(644)	(1,106)
Amortization of prior service costs	8	4
Effect of settlement		(48)
Amortization of loss (gain)	(31)	86
Net (loss) gain arising during the year	1,455	420
Accumulated other comprehensive income (loss)	$ 788	$ (644)	$ (1,106)