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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock-based Compensation (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 plan | Apr. 17, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Number of active stock based compensation plan | plan | 1 |
Number of shares authorized (in shares) | shares |  | 370,000
Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Option exercise price as percentages of closing exercise price | 110.00% |
Vesting period of stock options | 3 years |
Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentages of stock option ownership considered for higher exercise price of option | 10.00% |
Vesting period of stock options | 2 years |
Stock Options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Expiration period of stock option plan | 10 years |
Incentive Stock Options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Expiration period of stock option plan | 5 years |

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