Revenue Recognition - Schedule of Revenues Disaggregated by Service Line (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Total services	$ 202,303,000	$ 179,386,000	$ 588,078,000	$ 533,119,000
Patient Management Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	131,756,000	118,918,000	389,398,000	353,197,000
Network Solutions Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	$ 70,547,000	$ 60,468,000	$ 198,680,000	$ 179,922,000