Income Taxes (Schedule of Deferred Tax Asset (Liability)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
NOLs and tax credit carry forwards	$ 95,684	$ 98,631
Compensation and benefit plans	19,450	22,562
Allowance for doubtful accounts	1,285	1,832
Fixed assets and intangible assets	39,860	42,550
Accrued interest expense	5,258	5,599
Other liabilities	15,913	16,682
Deferred tax asset	177,450	187,856
Valuation allowance	(105,494)	(96,199)
Net deferred tax asset	71,956	91,657
Prepaid liabilities	(642)	(538)
Fixed assets and intangible assets	(106,820)	(84,005)
Investments in partnerships	(92,866)	(77,619)
Other assets	(23,894)	(36,458)
Deferred tax liability	(224,222)	(198,620)
Total net deferred tax liability	$ (152,266)	$ (106,963)