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Other Intangible Assets - Other Identifiable Intangible Assets and Related Accumulated Amortization (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Schedule Of Finite and Indefinite Lived Other Intangible Assets [Line Items] |  |
Intangible assets not subject to amortization, Gross Carrying Amount | $ 70,145 | $ 68,535
Total | 71,276 | 69,666
Intangible assets not subject to amortization, Accumulated Amortization | 0 | 0
Total | (1,131) | (1,131)
Licenses and Accreditations [Member] |  |
Schedule Of Finite and Indefinite Lived Other Intangible Assets [Line Items] |  |
Intangible assets not subject to amortization, Gross Carrying Amount | 11,600 | 11,873
Intangible assets not subject to amortization, Accumulated Amortization | 0 | 0
Trade Names [Member] |  |
Schedule Of Finite and Indefinite Lived Other Intangible Assets [Line Items] |  |
Intangible assets not subject to amortization, Gross Carrying Amount | 40,435 | 39,526
Intangible assets not subject to amortization, Accumulated Amortization | 0 | 0
Certificates of Need [Member] |  |
Schedule Of Finite and Indefinite Lived Other Intangible Assets [Line Items] |  |
Intangible assets not subject to amortization, Gross Carrying Amount | 18,110 | 17,136
Intangible assets not subject to amortization, Accumulated Amortization | 0 | 0
Non-Compete Agreements [Member] |  |
Schedule Of Finite and Indefinite Lived Other Intangible Assets [Line Items] |  |
Intangible assets subject to amortization, Gross Carrying Amount | 1,131 | 1,131
Intangible assets subject to amortization, Accumulated Amortization | $ (1,131) | $ (1,131)

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