Segment Information - Schedule of Customer Accounting of Segment Revenue (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Recognized revenue		$ 299,489	$ 271,893	$ 243,920
Customer C | Consumer And Research Services | Revenue | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Recognized revenue	[1]	$ 65,721	$ 53,875	$ 51,786
Percentage of Revenue	[1]	22.00%	20.00%	21.00%
Customer B | Consumer And Research Services | Revenue | Customer Concentration Risk [Member]
Segment Reporting Information [Line Items]
Recognized revenue	[2]	$ 47,448	$ 46,064	$ 39,917
Percentage of Revenue	[2]	16.00%	17.00%	16.00%

[1] Customer C revenues are primarily in the United States.

[2] Customer B revenues are in the U.K.