Business Combinations - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Number	Dec. 31, 2022 USD ($) Number
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 400	$ 26,700
Other intangible assets	4,500	2,300
Fixed assets	100	2,200
Other non-current assets	82,165	123,176
Pediatric Gastroenterology And Gynecology practice And Multi Location Pediatric Urgent Care Practice [Member]
Business Acquisition [Line Items]
Total business acquisition consideration		$ 31,300
Number of other multi location pediatric urgent care practice acquired | Number		1
One pediatric gastroenterology practice | Number		1
Business acquisition consiideration paid in cash		$ 26,500
Business acquisitions contingent consideration liability		4,800
Pediatric Urology Practice [Member]
Business Acquisition [Line Items]
Total business acquisition consideration	$ 5,000
Number of pediatric urology practice acquired | Number	1
Pediatric Subspecialty Practice [Member]
Business Acquisition [Line Items]
Other non-current assets		$ 100