Goodwill and Intangibles - Summary of Changes in Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	$ 302,563	$ 303,713
Gross carrying amount, definite-lived intangible assets	29,336	29,301
Accumulated amortization	(18,261)	(17,659)
Net total	11,075	11,642
Gross carrying amount, intangible assets	331,899	333,014
Net total	313,638	315,355
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	10,238	10,212
Accumulated amortization	(9,543)	(9,480)
Net total	695	732
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	7,276	7,267
Accumulated amortization	(6,634)	(6,387)
Net total	642	880
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	11,822	11,822
Accumulated amortization	(2,084)	(1,792)
Net total	9,738	10,030
Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	168,700	168,700
Certificates of Need/Licenses
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	$ 133,863	$ 135,013