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STOCKHOLDERS' EQUITY - Narrative (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  | 4 years 8 months 12 days |
Fair value of stock awards vested | $ 218,000 |  | $ 5,577,000 |
Stock Options |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Stock-based compensation expense | 89,000 | $ 11,000 | 122,000 | $ 11,000
Unrecognized stock-based compensation expense, stock options | 2,225,000 |  | 2,225,000 |
Aggregate intrinsic value of options exercised | 0 |  | 1,467,000 |
Restricted Stock Awards, Restricted Stock Units And Performance Stock Units |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Stock-based compensation expense | 2,225,000 | 2,576,000 | 5,204,000 | 8,505,000
Restricted Stock |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation expense | 46,000 |  | $ 46,000 |
Restricted Stock | Non Employee Director |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Award vesting period |  |  | 3 years |
Restricted Stock Unit |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation expense | 4,611,000 |  | $ 4,611,000 |
Restricted Stock Unit | Non Employee Director |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Award service period |  |  | 3 years |
Performance Stock Unit |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation expense | 5,592,000 |  | $ 5,592,000 |
Weighted average | Restricted Stock |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  | 1 year 3 months 18 days |
Weighted average | Restricted Stock Unit |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  | 1 year 9 months 18 days |
Weighted average | Performance Stock Unit |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Unrecognized stock-based compensation, weighted average period |  |  | 1 year 7 months 6 days |
2016 Plan |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Expiration period |  |  | 10 years |
2016 Plan | Minimum |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Award vesting period |  |  | 1 year |
2016 Plan | Maximum |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Award vesting period |  |  | 5 years |
Amended and Restated 1997 Employee Stock Purchase Plan |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Stock-based compensation expense | $ 97,000 | $ 67,000 | $ 262,000 | $ 196,000
Class A Common Stock | 2016 Plan |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Common stock, authorized shares (in shares) | 2,250,000 |  | 2,250,000 |
Number of shares available for future grant (in shares) | 793,000 |  | 793,000 |
Class A Common Stock | 2006 Incentive Plan |  |  |  |
Limited Partners' Capital Account [Line Items] |  |  |  |
Common stock, additional authorized shares (in shares) |  |  | 2,723,000 |

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