Employee Benefit Plans (Schedule of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Service cost	$ 3,974	$ 5,991	$ 7,796
Interest cost	6,041	4,610	4,439
Pension Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligations at beginning of year	122,430	169,976
Service cost	0	0	0
Interest cost	4,108	5,264	4,334
Settlement gain	(1,586)	(771)
Plan Settlements	(124,382)	0
Benefits paid	(4,652)	(22,164)
Other-primarily actuarial gain	5,070	(29,875)
Benefit Obligations at end of year	988	122,430	169,976
CHANGE IN PLAN ASSETS
Value of Plan Assets at beginning of year	121,127	177,499
Actual return on plan assets	4,625	(34,325)
Employer contributions	3,282	117
Plan Settlements	(124,382)	0
Benefits paid	(4,652)	(22,164)
Value of Plan Assets at end of year	0	121,127	177,499
Accrued benefit net obligation	(988)	(1,303)
ITEMS NOT YET RECOGNIZED AS A COMPONENT OF NET PERIODIC BENEFIT COST
Prior service credit	0	945
Accumulated gain	1,150	5,164
Total not yet recognized as a component of net periodic benefit cost	1,150	6,109
BALANCE SHEET AMOUNTS
Noncurrent asset	0	0
Current liability	(110)	(202)
Noncurrent liability	(878)	(1,101)
Total balance sheet amounts	(988)	(1,303)
Other Postretirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligations at beginning of year	54,514	79,245
Service cost	231	282	341
Interest cost	2,694	2,006	2,113
Settlement gain	0	0
Plan Settlements	0	0
Benefits paid	(3,858)	(4,834)
Other-primarily actuarial gain	(2,227)	(22,185)
Benefit Obligations at end of year	51,354	54,514	79,245
CHANGE IN PLAN ASSETS
Value of Plan Assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	3,858	4,834
Plan Settlements	0	0
Benefits paid	(3,858)	(4,834)
Value of Plan Assets at end of year	0	0	$ 0
Accrued benefit net obligation	(51,354)	(54,514)
ITEMS NOT YET RECOGNIZED AS A COMPONENT OF NET PERIODIC BENEFIT COST
Prior service credit	0	0
Accumulated gain	32,871	40,334
Total not yet recognized as a component of net periodic benefit cost	32,871	40,334
BALANCE SHEET AMOUNTS
Noncurrent asset	0	0
Current liability	(3,860)	(4,840)
Noncurrent liability	(47,494)	(49,674)
Total balance sheet amounts	$ (51,354)	$ (54,514)