Pension and Other Retirement Plans (Schedule of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Change in Plan Assets [Roll Forward]
Long-term pension liabilities	$ 14,275	$ 18,520
Pension Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll forward]
Projected benefit obligation at beginning of year	233,640	219,444
Interest cost	4,697	6,236
Actuarial (gain) loss	(6,477)	20,261
Benefit payments	(12,496)	(12,301)
Projected benefit obligation at end of year	219,364	233,640
Defined Benefit Plan, Change in Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	215,120	196,405
Return on plan assets	2,465	31,016
Benefit payments	(12,496)	(12,301)
Fair value of plan assets at end of year	205,089	215,120
Funded status	(14,275)	(18,520)
Long-term pension liabilities	14,275	18,520
Accumulated benefit obligation	$ 219,364	$ 233,640