STOCK-BASED COMPENSATION: - Stock-based compensation activity, by award type (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based compensation
Total non-cash stock-based compensation	$ 61,475	$ 64,583
Total non-cash stock-based compensation included in the consolidated statements of equity	43,238	44,917
Stock options
Share-based compensation
Share-based compensation expense	1,541	1,841
Restricted stock units
Share-based compensation
Share-based compensation expense	37,810	40,488
Restricted stock units | Diablo.AI, Inc.
Share-based compensation
Share-based compensation expense	660	0
Consideration Holdback | Data Plus Math Corporation
Share-based compensation
Share-based compensation expense	6,092	6,000
Consideration Holdback | DataFleets, Ltd
Share-based compensation
Share-based compensation expense	4,529	0
Pacific Data Partners, LLC Agreement Plan | Pacific Data Partners LLC
Share-based compensation
Share-based compensation expense	6,826	13,791
Acuity Performance Earnout | Acuity Data
Share-based compensation
Share-based compensation expense	1,558	1,428
Other stock-based compensation
Share-based compensation
Share-based compensation expense	2,459	1,035
Liability-based equity awards
Share-based compensation
Total non-cash stock-based compensation	$ (18,237)	$ (19,666)