Goodwill and Intangible Assets - Summary of Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 114,168	$ 110,020
Accumulated Amortization	(92,928)	(91,529)
Net Carrying Value	21,240	18,491
Physician And Hospital Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	105,577	101,325
Accumulated Amortization	(88,775)	(85,457)
Net Carrying Value	16,802	15,868
Other Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,591	8,695
Accumulated Amortization	(4,153)	(6,072)
Net Carrying Value	$ 4,438	$ 2,623