Goodwill and Intangible Assets (Schedule of Carrying Amount and Accumulated Amortization of Intangible Asset) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Intangible assets with indefinite lives	$ 25,901
Intangible assets subject to amortization:
Gross carrying amount	115,906
Accumulated amortization	(65,507)
Intangible assets subject to amortization, net	50,399
Total intangible assets at March 31, 2022	76,300	$ 64,321
Customer and Referral Relationships [Member]
Intangible assets subject to amortization:
Gross carrying amount	44,672
Accumulated amortization	(36,779)
Intangible assets subject to amortization, net	7,893
Total intangible assets at March 31, 2022	7,893
Trade Names and Trademarks [Member]
Intangible assets subject to amortization:
Gross carrying amount	51,941
Accumulated amortization	(19,126)
Intangible assets subject to amortization, net	32,815
Total intangible assets at March 31, 2022	32,815
Non-competition Agreements [Member]
Intangible assets subject to amortization:
Gross carrying amount	6,785
Accumulated amortization	(4,081)
Intangible assets subject to amortization, net	2,704
Total intangible assets at March 31, 2022	2,704
State Licenses [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets with indefinite lives	25,901
Intangible assets subject to amortization:
Gross carrying amount	12,508
Accumulated amortization	(5,521)
Intangible assets subject to amortization, net	6,987
Total intangible assets at March 31, 2022	$ 32,888