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STOCKHOLDERS' EQUITY: - Stock Option Activity of Continuing Operations (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Feb. 17, 2021	Jul. 02, 2019	Feb. 28, 2021	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Share-based compensation
Exercised (in dollars per share)				$ 12.16
Exercised				$ 23,227
DataFleets, Ltd
Share-based compensation
Total fair value of the replacement stock options issued	$ 2,900			2,900
Data Plus Math Corporation
Share-based compensation
Total fair value of the replacement stock options issued		$ 7,400			$ 7,400
Fair value of replacement stock options considered a component of purchase price		2,300			2,300
Share-based payment arrangement, amount capitalized		$ 5,100			5,100
Stock options
Share-based compensation
Exercised				$ 23,200	$ 6,700	$ 35,300
Stock options | DataFleets, Ltd
Share-based compensation
Shares issued in period (in shares)			42,154
Exercised (in dollars per share)				$ 0.70
Stock options | Data Plus Math Corporation
Share-based compensation
Shares issued in period (in shares)					162,481
Exercised (in dollars per share)					$ 1.64

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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