GEOGRAPHICAL INFORMATION - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Segment Reporting Information [Line Items]
Total revenue	$ 151,557	$ 129,133	$ 299,884	$ 250,940
Total property and equipment, net	86,860		86,860		$ 93,076
United States
Segment Reporting Information [Line Items]
Total revenue	104,607	96,105	208,265	189,349
Total property and equipment, net	82,265		82,265		87,945
International
Segment Reporting Information [Line Items]
Total revenue	46,950	$ 33,028	91,619	$ 61,591
Total property and equipment, net	$ 4,595		$ 4,595		$ 5,131