Goodwill and Intangibles - Summary of Changes in Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	$ 303,193	$ 303,713
Gross carrying amount, definite-lived intangible assets	29,302	29,301
Accumulated amortization	(17,963)	(17,659)
Net total	11,339	11,642
Gross carrying amount, intangible assets	332,495	333,014
Net total	314,532	315,355
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	10,212	10,212
Accumulated amortization	(9,514)	(9,480)
Net total	698	732
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	7,267	7,267
Accumulated amortization	(6,512)	(6,387)
Net total	755	880
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	11,823	11,822
Accumulated amortization	(1,937)	(1,792)
Net total	9,886	10,030
Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	168,699	168,700
Certificates of Need/Licenses
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	$ 134,494	$ 135,013