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Goodwill and Intangible Assets (Schedule of Carrying Amount and Accumulated Amortization of Intangible Asset) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets with indefinite lives | $ 20,791 | $ 13,306
Intangible assets subject to amortization: |  |
Gross carrying amount | 106,330 | 95,739
Accumulated amortization | (55,572) | (51,966)
Intangible assets subject to amortization, net | 50,758 | 43,773
Net balance at end of period | 71,549 | 57,079
Customer and Referral Relationships [Member] |  |
Intangible assets subject to amortization: |  |
Gross carrying amount | 44,672 | 48,028
Accumulated amortization | (34,439) | (35,665)
Intangible assets subject to amortization, net | 10,233 | 12,363
Net balance at end of period | 10,233 | 12,363
Trade Names and Trademarks [Member] |  |
Intangible assets subject to amortization: |  |
Gross carrying amount | 42,926 | 31,036
Accumulated amortization | (15,191) | (12,941)
Intangible assets subject to amortization, net | 27,735 | 18,095
Net balance at end of period | 27,735 | 18,095
Non-competition Agreements [Member] |  |
Intangible assets subject to amortization: |  |
Gross carrying amount | 6,225 | 4,655
Accumulated amortization | (2,887) | (2,234)
Intangible assets subject to amortization, net | 3,338 | 2,421
Net balance at end of period | 3,338 | 2,421
State Licenses [Member] |  |
Finite Lived Intangible Assets [Line Items] |  |
Intangible assets with indefinite lives | 20,791 | 13,306
Intangible assets subject to amortization: |  |
Gross carrying amount | 12,507 | 12,020
Accumulated amortization | (3,055) | (1,126)
Intangible assets subject to amortization, net | 9,452 | 10,894
Net balance at end of period | $ 30,243 | $ 24,200

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