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EQUITY-BASED INCENTIVE PLANS - Narrative (Details) $ / shares in Units, $ in Thousands | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) shares | Sep. 01, 2019 $ / shares | Jun. 30, 2016 shares | May 31, 2013 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
Expiration period | 10 years |  |  |  |
Ownership percent of voting stock | 10.00% |  |  |  |
Unrecognized stock-based compensation expense | $ | $ 8,800 |  |  |  |
Remaining contractual term, options expected to vest | 2 years 6 months |  |  |  |
Share-based compensation arrangement by share-based payment award, award requisite service period | 5 years |  |  |  |
Stock Issuance Program |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of fair market value on grant date, minimum exercise price | 100.00% |  |  |  |
2013 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares authorized |  |  |  |  | 4,750,000
Shares available for grant | 15,967 |  |  | 625,390 |
2016 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares authorized |  |  |  | 4,500,000 |
Shares available for grant | 435,057 |  |  |  |
All Plans |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares available for grant | 5,908,173 |  |  |  |
Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 4 years |  |  |  |
Market Based Service |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 3 years |  |  |  |
RSAs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Nonvested shares vested | (62,501) |  |  |  |
Nonvested shares outstanding | 747,735 | 517,569 |  |  |
RSAs | Non-Vested |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Fair value of options vested in period | $ | $ 325 |  |  |  |
Nonstatutory Options | Discretionary Option Grant Program |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of fair market value on grant date, minimum exercise price | 85.00% |  |  |  |
Incentive Stock Options | Discretionary Option Grant Program | Less Than 10% |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of fair market value on grant date, minimum exercise price | 100.00% |  |  |  |
Incentive Stock Options | Discretionary Option Grant Program | 10% or More |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of fair market value on grant date, minimum exercise price | 110.00% |  |  |  |
Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Options granted (in shares) | 1,155,000 |  |  |  |
Weighted average grant date fair value (in usd per share) | $ / shares | $ 1.19 |  |  |  |
Volatility rate | 30.00% |  |  |  |
Risk free interest rate | 1.85% |  |  |  |
Expected term | 6 years 1 month 9 days |  |  |  |
Expected dividend rate | 0.00% |  |  |  |
Remaining contractual term, options expected to vest | 9 years 2 months 12 days |  |  |  |
Options | Time Based Service | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 3 years |  |  |  |
Options | Time Based Service | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 4 years |  |  |  |
RSUs |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Fair value of options vested in period | $ | $ 92 |  |  |  |
Nonvested shares vested | (77,501) |  |  |  |
Nonvested shares outstanding | 18,770 | 450,000 |  |  |
RSUs | Time Based Service | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 1 year |  |  |  |
RSUs | Time Based Service | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period | 4 years |  |  |  |
RSUs | Market Based Service |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted average grant date fair value of nonvested options | $ / shares |  |  | $ 1.42 |  |
Unrecognized stock-based compensation expense | $ | $ 53 | $ 105 |  |  |
Restricted stock units | Risk free interest rate | Black Scholes Method |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Debt instrument, measurement input |  |  | 0.0138 |  |
Restricted stock units | Expected term | Monte Carlo Method |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Debt instrument, measurement input |  |  | 3 |  |
Restricted stock units | Price volatility | Black Scholes Method |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Debt instrument, measurement input |  |  | 0.38 |  |
Profits Interests |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Fair value of profits interests | $ | $ 591 | $ 591 |  |  |

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