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DEBT - Narrative (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 19, 2021 USD ($) day $ / shares | Jan. 01, 2021 | Jan. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) $ / shares | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) $ / shares | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) $ / shares | Dec. 27, 2021 $ / shares | Nov. 30, 2020 USD ($) | Jul. 31, 2019 USD ($) | Jul. 26, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (usd per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.0001 |  |  |
Derivative liability - redemption with make-whole provision |  |  |  | $ 613 |  | $ 613 |  | $ 552 |  |  |  |
Gain (loss) on derivative |  |  |  | 187 | $ 0 | (61) | $ 0 |  |  |  |  |
Payment of term loan |  |  |  | 13,753 |  | 16,878 | 12,000 |  |  |  |  |
Amount outstanding |  |  |  | 351,906 |  | 351,906 |  | 360,029 |  |  |  |
Derivative gain at settlement |  |  | $ 400 |  |  |  |  |  |  |  |  |
Derivative notional amount |  |  |  | 125,000 |  | 125,000 |  |  |  |  |  |
Derivative asset |  |  |  | $ 5,590 |  | $ 5,590 |  |  |  |  |  |
2016 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  |  | 1,800 |  | $ 3,200 |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | $ 310,000 |  | 300,000 |  | $ 120,000
2016 Credit Facility | Prime rate |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  |  | 2.00% |  |  |  |  |  |
2016 Credit Facility | LIBOR |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  |  | 3.00% |  |  |  |  |  |
Class A Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (usd per share) | $ / shares |  |  |  | $ 0.0001 |  | $ 0.0001 |  | $ 0.0001 |  |  |  |
Exchangeable Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Face amount | $ 130,000 |  |  |  |  |  |  |  |  |  |  |
Conversion price (usd per share) | $ / shares | $ 11.50 |  |  |  |  |  |  |  |  |  |  |
Interest rate | 7.00% |  |  |  |  |  |  |  |  |  |  |
Term | 5 years |  |  |  |  |  |  |  |  |  |  |
Redemption, period from Closing Date | 3 years |  |  |  |  |  |  |  |  |  |  |
Redemption, stock price percentage threshold | 130.00% |  |  |  |  |  |  |  |  |  |  |
Redemption, threshold trading days | day | 20 |  |  |  |  |  |  |  |  |  |  |
Redemption, threshold consecutive trading days | 30 days |  |  |  |  |  |  |  |  |  |  |
Redemption, notice period | 30 days |  |  |  |  |  |  |  |  |  |  |
Redemption price percentage | 100.00% |  |  |  |  |  |  |  |  |  |  |
Redemption, VWAP, threshold trading days | 5 days |  |  |  |  |  |  |  |  |  |  |
Maximum conversion rate | 0.0999999 |  |  |  |  |  |  |  |  |  |  |
Anti-dilution, period after common stock issuance | 45 days |  |  |  |  |  |  |  |  |  |  |
Anti-dilution, threshold consecutive trading days | 10 days |  |  |  |  |  |  |  |  |  |  |
Fundamental change, repurchase price percentage | 100.00% |  |  |  |  |  |  |  |  |  |  |
Registration default, interest rate for first 90 days | 0.25% |  |  |  |  |  |  |  |  |  |  |
Registration default, interest rate after 90 days | 0.50% |  |  |  |  |  |  |  |  |  |  |
Event of default, threshold percentage of note holders that may declare notes payable immediately | 25.00% |  |  |  |  |  |  |  |  |  |  |
Event of default, percentage of notes payable immediately | 100.00% |  |  |  |  |  |  |  |  |  |  |
Event of default, interest rate for first 90 days | 0.25% |  |  |  |  |  |  |  |  |  |  |
Event of default, interest rate for days 91-180 | 0.50% |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ 2,366 |  | $ 4,720 |  |  |  |  |  |
Effective interest rate |  |  |  | 7.40% |  | 7.40% |  |  |  |  |  |
Debt issuance costs | $ 2,600 |  |  |  |  |  |  |  |  |  |  |
Line of credit and term loan | 2016 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ 3,000 | $ 2,891 | $ 6,170 | $ 5,928 |  |  |  |  |
Effective interest rate |  |  |  | 3.65% | 4.36% | 3.65% | 4.36% |  |  |  |  |
Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  | 3.00% |  |  |  |  |  |  |  |  |  |
Line of Credit | 2016 Credit Facility | Revolver |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 60,000 |
Annual commitment fee percentage |  |  |  |  |  | 0.40% |  |  |  |  |  |
Amount outstanding |  |  |  | $ 25,000 |  | $ 25,000 |  | $ 15,000 |  |  |  |
Availability for borrowing |  |  |  | $ 35,000 |  | $ 35,000 |  |  |  |  |  |
Term loan | 2016 Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  |  | $ 250,000 |  | $ 240,000 | $ 140,000 |

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