OTHER CURRENT AND NONCURRENT ASSETS: Schedule of Other Current and Noncurrent Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Mar. 31, 2021
Other current assets
Prepaid expenses and other	$ 15,552	$ 31,659
Share receivable for cash settlement of withheld income tax withholdings on equity award	0	9,055
Certificates of deposit	7,500	7,500
Assets of non-qualified retirement plan	17,532	15,838
Other current assets	40,584	64,052
Other noncurrent assets
Long-term prepaid revenue share	15,546	8,127
Right-of-use assets (see Note 4)	58,751	11,731
Deferred tax asset	641	663
Deposits	3,911	2,745
Strategic investments	5,700	5,700
Other miscellaneous noncurrent assets	812	1,888
Other assets, net	$ 85,361	$ 30,854