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STOCK-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2023 tranche $ / shares shares | Jan. 31, 2022 tranche shares | Jun. 30, 2020 $ / shares shares | Sep. 30, 2023 USD ($) incentivePlan shares | Dec. 31, 2023 shares | Jun. 07, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of plans | incentivePlan |  |  |  | 1 |  |
Number of shares authorized (in shares) |  |  |  |  |  | 20,100,000
Issuance of common stock upon exercise of options (in shares) |  |  |  | 261,220 |  |
Shares available for future issuance, options, warrants, shares of restricted stock and other bonus awards (in shares) |  |  |  | 4,058,012 |  |
DeepHealth Inc. |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation expense | $ |  |  |  | $ 0.1 |  |
Options granted (in dollars per share) | $ / shares |  |  | $ 16.93 |  |  |
Shares Issuable Upon the Exercise of Stock Options |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized stock-based compensation expense | $ |  |  |  | $ 1.9 |  |
Unrecognized expense weighted average period |  |  |  | 1 year 6 months 10 days |  |
Shares Issuable Upon the Exercise of Stock Options | DeepHealth Inc. |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized expense weighted average period |  |  |  | 4 months 6 days |  |
Issuance of common stock upon exercise of options (in shares) |  |  | 412,434 |  |  |
Other Stock Bonus Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Issuance of common stock upon exercise of options (in shares) |  |  |  | 10,765,000 |  |
Issuance of common stock upon exercise of options | $ |  |  |  | $ 0.2 |  |
Performance Based Stock Units ("PSUs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period | 3 years | 3 years |  |  |  |
Granted (in shares) | 60,685 | 25,683 |  |  |  |
Number of vesting traches | tranche | 2 | 2 |  |  |  |
Performance Based Stock Units ("PSUs") | Subsequent Event |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares expected to vest (in shares) |  |  |  |  | 121,370 |
Performance Based Stock Units ("PSUs") | Board of Directors |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares issued (in shares) | 12,843 |  |  |  |  |
Shares issued per share (in dollars per share) | $ / shares | $ 29.44 |  |  |  |  |
Performance Based Stock Options ("PSOs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period | 3 years | 3 years |  |  |  |
Issuance of common stock upon exercise of options (in shares) | 235,227 | 111,925 |  |  |  |
Number of vesting traches | tranche | 3 | 3 |  |  |  |
Performance Based Stock Options ("PSOs") | Board of Directors |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares issued (in shares) | 27,981 |  |  |  |  |
Shares issued per share (in dollars per share) | $ / shares | $ 29.44 |  |  |  |  |
AI Long Term Incentive Plan shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Granted (in shares) |  |  |  | 213,409 |  |
Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  | 3 years |  |
Share-based payment award, expiration period |  |  |  | 5 years |  |
Minimum | Performance Based Stock Units ("PSUs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Award vesting rights, percentage | 0.00% | 0.00% |  |  |  |
Minimum | Performance Based Stock Options ("PSOs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available in grant (in shares) | 0 | 0 |  |  |  |
Minimum | AI Long Term Incentive Plan shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  | 2 years |  |
Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  | 5 years |  |
Share-based payment award, expiration period |  |  |  | 10 years |  |
Maximum | Performance Based Stock Units ("PSUs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Award vesting rights, percentage | 200.00% | 200.00% |  |  |  |
Maximum | Performance Based Stock Options ("PSOs") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available in grant (in shares) | 235,227 | 111,925 |  |  |  |
Maximum | AI Long Term Incentive Plan shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based payment award, award vesting period |  |  |  | 4 years |  |

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