Revenue Recognition - Schedule of Revenues Disaggregated by Service Line (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Total services	$ 227,973,000	$ 202,303,000	$ 664,075,000	$ 588,078,000
Patient Management Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	145,860,000	131,756,000	432,206,000	389,398,000
Network Solutions Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	$ 82,113,000	$ 70,547,000	$ 231,869,000	$ 198,680,000