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STOCKHOLDERS' EQUITY: - Stock Option Activity of Continuing Operations (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jul. 02, 2019 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Share-based compensation |  |  |  |
Exercised (in dollars per share) |  | $ 6.13 |  |
Exercised |  | $ 6,666 |  |
Data Plus Math Corporation |  |  |  |
Share-based compensation |  |  |  |
Total fair value of the replacement stock options issued |  | $ 7,400 |  |
Expected dividend yield |  | 0.00% |  |
Risk free interest rate, minimum |  | 1.86% |  |
Risk free interest rate, maximum |  | 1.96% |  |
Expected volatility rate |  | 45.00% |  |
Number of option fully vested (in shares) |  | 48,619 |  |
Fair value of replacement stock options considered a component of purchase price | $ 2,300 |  |  |
Share-based payment arrangement, amount capitalized |  | $ 5,100 |  |
Data Plus Math Corporation | Minimum |  |  |  |
Share-based compensation |  |  |  |
Expected term |  | 7 years 3 months 29 days |  |
Data Plus Math Corporation | Maximum |  |  |  |
Share-based compensation |  |  |  |
Expected term |  | 9 years 6 months 18 days |  |
Stock options |  |  |  |
Share-based compensation |  |  |  |
Exercised |  | $ 6,700 | $ 35,300 | $ 6,500
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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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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