STOCK BASED COMPENSATION - 2019 Employee Stock Purchase Plan (Details) - 2019 ESPP - shares |
1 Months Ended | 12 Months Ended |
|---|---|---|
May 31, 2019 |
Dec. 31, 2021 |
|
| Stock-based compensation | ||
| Shares authorized (in shares) | 180,000 | |
| Shares issued under ESPP | 0 | |
| Maximum | ||
| Stock-based compensation | ||
| Increase in number of shares reserved and available for issuance (as a percent) | 1.00% | |
| Increase in number of shares reserved and available for issuance (in shares) | 360,000 |