Segment Reporting - Schedule of Percentages of Revenues Attributable to Patient Management and Network Solutions Services (Detail) - Product Concentration Risk [Member] - Sales Revenue, Services, Net [Member]	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Revenue, Major Customer [Line Items]
Percentage of revenues	100.00%	100.00%	100.00%
Patient Management Services [Member]
Revenue, Major Customer [Line Items]
Percentage of revenues	62.30%	64.90%	66.60%
Network Solutions Services [Member]
Revenue, Major Customer [Line Items]
Percentage of revenues	37.70%	35.10%	33.40%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.