Revenue Recognition - Schedule of Revenues Disaggregated by Service Line (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation Of Revenue [Line Items]
Total services	$ 224,380,000	$ 195,522,000	$ 436,102,000	$ 385,775,000
Patient Management Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	147,173,000	129,805,000	286,345,000	257,643,000
Network Solutions Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	$ 77,207,000	$ 65,717,000	$ 149,757,000	$ 128,132,000