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STOCKHOLDERS EQUITY - Stock options (Details) - Common Class D - 2019 Equity and Performance Incentive Plan - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Number of Options |  |
Number of Options, Outstanding at Beginning of Year (in shares) | 5,436,715 |
Number of Options, Grants (in shares) | 362,301 |
Number of Options, Forfeited (in shares) | 44,231 |
Number of Option, Forfeited/cancelled/expired/settled (in shares) | (61,420) |
Number of Options, Balance at End of Year (in shares) | 5,693,365 | 5,436,715
Number of Options, Vested and expected to vest (in shares) | 5,693,365 |
Number of Options, Unvested (in shares) | 618,190 |
Number of Options, Exercisable (in shares) | 5,075,175 |
Weighted-Average Exercise Price |  |
Weighted-Average Exercise Price, Outstanding at Beginning of Year (in dollars per share) | $ 2.83 |
Weighted-Average Exercise Price, Grants (in dollars per share) | 0.81 |
Weighted-Average Exercise Price, Forfeited (in dollars per share) | 1.11 |
Weighted-Average Exercise Price, Forfeited/cancelled/expired/settled (in dollars per share) | 4.76 |
Weighted-Average Exercise Price, Balance at End of Year (in dollars per share) |  | $ 2.83
Weighted-Average Exercise Price, Vested and expected to vest (in dollars per share) | 2.69 |
Weighted-Average Exercise Price, Unvested (in dollars per share) | 1.08 |
Weighted-Average Exercise Price, Exercisable (in dollars per share) | $ 2.89 |
Weighted-Average Remaining Contractual Term, Outstanding (in years) |  | 6 years 5 months 8 days
Weighted-Average Remaining Contractual Term, Grants (in years) | 9 years 11 months 1 day |
Weighted-Average Remaining Contractual Term, Forfeited (in years) | 9 years 6 months |
Weighted-Average Remaining Contractual Term, Vested and expected to vest (in years) | 6 years 4 months 20 days |
Weighted-Average Remaining Contractual Term, Unvested (in years) | 9 years 6 months 21 days |
Weighted-Average Remaining Contractual Term, Exercisable (in years) | 6 years |
Aggregate Intrinsic Value, Outstanding | $ 0 | $ 0
Aggregate Intrinsic Value, Vested and expected to vest | 0 |
Aggregate Intrinsic Value, Unvested | 0 |
Aggregate Intrinsic Value, Exercisable | $ 0 |

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- Definition Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants In Period, Weighted Average Remaining Contractual Term + References No definition available. + Details
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- Definition The aggregate intrinsic value of non vested options. + References No definition available. + Details
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- Definition The weighted average remaining contractual term for options not vested. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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