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11. STOCK-BASED COMPENSATION (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 shares | Mar. 31, 2021 USD ($) item shares | Mar. 31, 2020 shares | Mar. 31, 2019 shares | Mar. 31, 2007 shares
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Granted (in shares) |  | 1,285,252 | 1,011,708 | 1,097,893 |
2007 Equity Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Maximum shares authorized |  |  |  |  | 3,000,000
Maximum annual plan shares authorized reserve increase percentage |  | 5.00% |  |  |
Granted (in shares) |  | 0 |  |  |
2007 Equity Incentive Plan | Non Officer Employee |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Vesting percentage |  | 25.00% |  |  |
2007 Equity Incentive Plan | Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Vesting period |  | 4 years |  |  |
2016 Equity Incentive Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Shares available for future award | 6,000,000 |  |  |  |
Previously authorized shares cancelled (in shares) | 705,699 |  |  |  |
Maximum shares subject to stock options and stock appreciation rights granted per employee per fiscal year |  | 300,000 |  |  |
Maximum shares subject to stock restricted stock and restricted stock unit awards granted per employee per fiscal year |  | 100,000 |  |  |
Maximum shares subject to performance share awards granted per employee per fiscal year |  | 50,000 |  |  |
Maximum amount subject to performance unit awards granted per employee per fiscal year | $ |  | $ 500,000 |  |  |
Maximum amount subject to cash-based or other stock-based awards granted per employee per fiscal year | $ |  | $ 500,000 |  |  |
Maximum shares subject to cash-based or other stock-based awards granted per employee per fiscal year |  | 50,000 |  |  |
2016 Equity Incentive Plan | Non Officer Employee |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Vesting percentage |  | 25.00% |  |  |
2016 Equity Incentive Plan | Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Vesting period |  | 4 years |  |  |
2016 Equity Incentive Plan | Director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Maximum total fair market value of a share | $ |  | $ 150,000 |  |  |
2007 Employee Stock Purchase Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Maximum shares authorized |  |  |  |  | 500,000
Maximum annual plan shares authorized reserve increase percentage |  | 1.00% |  |  |
Maximum annual plan shares authorized reserve share increase |  | 250,000 |  |  |
Minimum hours to work per week to qualify for the Employee Stock Purchase Plan | item |  | 20 |  |  |
Minimum number of months per year needed to work to qualify for the Employee Stock Purchase Plan |  | 5 months |  |  |
Maximum percentage stock ownership to qualify for the Employee Stock Purchase Plan |  | 5.00% |  |  |
Maximum annual purchase rights per employee per year to enable granting of additional rights | $ |  | $ 25,000 |  |  |
Offering period length |  | 6 months |  |  |
Exercise price percentage of fair value of shares |  | 85.00% |  |  |
Maximum share purchase per employee per offering period number of shares multiplier |  | 1,000 |  |  |
Maximum share purchase per employee per offering period value multiplier |  | 2,083.33 |  |  |
Shares issued (in shares) |  | 123,487 |  |  |
2007 Employee Stock Purchase Plan | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Offering period length |  | 27 months |  |  |

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- Definition Represents the number of shares per month used to calculate the maximum number of shares an employee can purchase in an offering period. + References No definition available. + Details
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- Definition Represents the percentage which employees must own less than in order to qualify for the Employee Stock Purchase Plan (ESPP). + References No definition available. + Details
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- Definition Represents the value per month used to calculate the maximum number of shares an employee can purchase in an offering period. + References No definition available. + Details
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- Definition Represents the minimum number of months per year needed to work for employees to qualify for the Employee Stock Purchase Plan. + References No definition available. + Details
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- Definition Represents the maximum amount subject to cash-based or other stock-based unit awards that can be granted to an employee in any fiscal year. + References No definition available. + Details
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- Definition Represents the maximum annual percentage increase in the plan shares authorized reserve. + References No definition available. + Details
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- Definition Represents the maximum amount of shares subject to restricted stock and restricted stock unit awards that can be granted to an employee in any fiscal year. + References No definition available. + Details
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- Definition Represents the maximum amount of shares subject to stock options and stock appreciation rights that can be granted to an employee in any fiscal year. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Percentage of vesting of award under share-based payment arrangement. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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