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STOCK-BASED COMPENSATION - Additional Information (Details) $ in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Apr. 30, 2021 USD ($) person item shares | Apr. 30, 2020 person shares | Apr. 30, 2021 USD ($) item shares | Apr. 30, 2020 USD ($) | Jun. 23, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Percentage Reduction In The Aggregate Fair Value Of Stock Option |  |  | 88.50% |  |
Stock compensation expense | $ |  |  | $ 679 | $ 642 |
Unrecognized compensation cost | $ | $ 7,400 |  | $ 7,400 |  |
Compensation expense recognize, period |  |  | 3 years |  |
Intrinsic value of outstanding stock options | $ | 12,500 |  | $ 12,500 |  |
Intrinsic value of exercisable stock options | $ | $ 9,200 |  | $ 9,200 |  |
Period used for calculations |  |  | 5 years |  |
Fair value of award as a percentage of market value |  |  | 50.00% |  |
Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Period used for calculations |  |  | 3 years |  |
Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Period used for calculations |  |  | 5 years |  |
2020 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Number of shares of common stock reserved for issuance |  |  |  |  | 500,000
Stock Options Plans |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Initial vesting percentage |  |  | 33.33% |  |
Period to become exercisable |  |  | 3 years |  |
Number of shares of common stock available for award | 493,528 |  | 493,528 |  |
Number of shares of common stock reserved for issuance | 2,090,929 |  | 2,090,929 |  |
Intrinsic value of the stock options exercised | $ |  |  | $ 300 | $ 300 |
Performance-based restricted stock units | 2011 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Number of executives | person | 4 | 2 |  |  |
ISOs/NSOs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Incentive stock option award maximum expiration period |  |  | 10 years |  |
Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Number of shares earned and issue under the restricted stock unit |  |  | 40,000 |  |
Restricted Stock Units | 2011 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Period to become exercisable |  |  | 3 years |  |
Number of shares earned and issue under the restricted stock unit |  |  | 40,471 |  |
Renewable Performance-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Awards authorized | 5,000 |  | 5,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award | three-year |  |  |  |
Time Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Initial vesting percentage | 33.33% |  |  |  |
Awards authorized | 49,500 |  | 49,500 |  |
Number of anniversaries | item | 3 |  | 3 |  |
Senior executives | Performance-based restricted stock units | 2011 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Period to become exercisable |  |  | 3 years |  |
Percentage of the maximum shares for the target number of shares awarded |  |  | 50.00% |  |
Senior executives | Performance-based restricted stock units | 2011 Plan | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Number of shares awarded |  | 45,000 | 49,000 |  |
Senior executives | Renewable Performance-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |
Number of executives | person | 2 |  |  |  |

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- Definition The period of monthly closing prices used for the estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. 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 No definition available. + Details
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