Revenue Recognition - Schedule of Revenues Disaggregated by Service Line (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Total services	$ 179,386,000	$ 164,508,000	$ 533,119,000	$ 474,871,000
Patient Management Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	118,918,000	107,711,000	353,197,000	312,829,000
Network Solutions Services [Member]
Disaggregation Of Revenue [Line Items]
Total services	$ 60,468,000	$ 56,797,000	$ 179,922,000	$ 162,042,000