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SHAREHOLDERS' EQUITY AND SHARE-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Millions |  |  |  |  | 12 Months Ended |  |  |
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Feb. 13, 2025 $ / shares shares | Sep. 07, 2023 USD ($) $ / shares shares | May 16, 2023 $ / shares shares | Feb. 14, 2023 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) component vote $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Feb. 19, 2025 shares | Feb. 18, 2025 $ / shares shares | Feb. 17, 2025 $ / shares shares
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  | 100,000,000 | 100,000,000 |  |  |
Common stock, shares issued (in shares) |  |  |  |  | 29,963,000 | 29,963,000 |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  | 27,226,000 | 26,496,000 |  |  |
Voting rights per share | vote |  |  |  |  | 1,000 |  |  |  |
Common stock, par value (in USD per share) | $ / shares |  |  |  |  | $ 1.00 | $ 1.00 |  |  |
Maximum number of Altisource share-based awards that can be granted under the Plan (in shares) |  |  |  |  | 11,700,000 |  |  |  |
Share-based awards available for future grants under the Plan (in shares) |  |  |  |  | 4,000,000.0 |  |  |  |
Share-based compensation expense | $ |  |  |  |  | $ 4.7 | $ 5.1 |  |  |
Estimated unrecognized compensation costs | $ |  |  |  |  | $ 1.2 |  |  |  |
Weighted average remaining requisite service period for stock options over which unrecognized compensation costs would be recognized |  |  |  |  | 11 months 23 days |  |  |  |
Options outstanding (in shares) |  |  |  |  | 680,242 | 739,189 |  |  |
Granted (in shares) |  |  |  |  | 0 | 0 |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) |  |  |  |  |  |  |  | 250,000,000.0 | 100,000,000.0
Common stock, shares issued (in shares) |  |  |  |  |  |  | 58,200,000 |  |
Common stock, par value (in USD per share) | $ / shares |  |  |  |  |  |  |  | $ 0.01 | $ 1.00
Share-based awards available for future grants under the Plan (in shares) |  |  |  |  |  |  |  | 16,300,000 | 11,700,000
Common stock | Public Stock Offering |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Number of shares issued in transaction |  | 5,590,277 |  | 4,550,000 |  |  |  |  |
Sale of stock (in usd per share) | $ / shares |  | $ 3.60 |  | $ 5.00 |  |  |  |  |
Net proceeds from sale of stock | $ |  | $ 18.4 |  | $ 20.5 |  |  |  |  |
Stock Options, Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Options outstanding (in shares) |  |  |  |  | 461,000 |  |  |  |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 25.00% |  |  |  |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Four |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 25.00% |  |  |  |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 25.00% |  |  |  |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 25.00% |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, outstanding (in shares) |  |  |  |  | 190,000 |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 33.00% |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche One |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 33.00% |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche Three |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 33.00% |  |  |  |
Stock Options, Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Options outstanding (in shares) |  |  |  |  | 54,000 |  |  |  |
Number of components of an award | component |  |  |  |  | 2 |  |  |  |
Allowable performance period before expiration date (in years) |  |  |  |  | 3 years |  |  |  |
Restricted Stock Units (RSUs), Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, granted (in shares) |  |  |  |  | 88,000 | 57,000 |  |  |
Restricted Share Units |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, granted (in shares) |  |  |  |  | 1,725,000 | 891,000 |  |  |
Other than options, granted (in dollars per share) | $ / shares |  |  |  |  | $ 2.39 | $ 4.82 |  |  |
Restricted Share Units | Subsequent Event |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, granted (in shares) | 4,600,000 |  |  |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) | $ / shares | $ 1.06 |  |  |  |  |  |  |  |
Restricted Stock Units (RSUs), Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, granted (in shares) |  |  |  |  | 88,000 | 57,000 |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based and Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, outstanding (in shares) |  |  |  |  | 189,000 |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, outstanding (in shares) |  |  |  |  | 112,000 |  |  |  |
Stock Options, Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Options outstanding (in shares) |  |  |  |  | 165,000 |  |  |  |
Ordinary performance |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Percentage of awards (in percent) |  |  |  |  | 67.00% |  |  |  |
Vesting threshold |  |  |  |  | 2 |  |  |  |
Restricted Shares and Restricted Stock Units (RSUs), Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Other than options, outstanding (in shares) |  |  |  |  | 1,507,000 |  |  |  |
Extraordinary performance |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Percentage of awards (in percent) |  |  |  |  | 33.00% |  |  |  |
Vesting threshold |  |  |  |  | 3 |  |  |  |
Minimum | Stock Options, Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Allowable performance period before expiration date (in years) |  |  |  |  | 10 years |  |  |  |
Attainment above threshold performance levels, vesting percentage (in percent) |  |  |  |  | 50.00% |  |  |  |
Minimum | Stock Options, Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 3 years |  |  |  |
Minimum | Restricted Shares and Restricted Stock Units (RSUs), Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 30 days |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 50.00% |  |  |  |
Minimum | Stock Options, Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 3 years |  |  |  |
Minimum | Ordinary performance |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Percentage of compounded annual gain of stock price over exercise price required for the award to vest (in percent) |  |  |  |  | 20.00% |  |  |  |
Minimum | Restricted Shares and Restricted Stock Units (RSUs), Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 1 year |  |  |  |
Minimum | Extraordinary performance |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Percentage of compounded annual gain of stock price over exercise price required for the award to vest (in percent) |  |  |  |  | 25.00% |  |  |  |
Maximum | Stock Options, Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Attainment above threshold performance levels, vesting percentage (in percent) |  |  |  |  | 200.00% |  |  |  |
Maximum | Restricted Shares and Restricted Stock Units (RSUs), Performance-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Attainment above threshold performance levels, vesting percentage (in percent) |  |  |  |  | 150.00% |  |  |  |
Maximum | Stock Options, Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 4 years |  |  |  |
Expiration term (in years) |  |  |  |  | 10 years |  |  |  |
Maximum | Restricted Shares and Restricted Stock Units (RSUs), Performance-Based and Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Attainment above threshold performance levels, vesting percentage (in percent) |  |  |  |  | 300.00% |  |  |  |
Maximum | Restricted Shares and Restricted Stock Units (RSUs), Market-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 1 year |  |  |  |
Award vesting percentage (in percent) |  |  |  |  | 50.00% |  |  |  |
Maximum | Stock Options, Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 4 years |  |  |  |
Expiration term (in years) |  |  |  |  | 10 years |  |  |  |
Maximum | Restricted Shares and Restricted Stock Units (RSUs), Service-Based |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Vesting period (in years) |  |  |  |  | 4 years |  |  |  |
Stock Repurchase Program, Current |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Number of shares of common stock authorized to be purchased (in shares) |  |  | 3,100,000 |  |  |  |  |  |
Percentage of outstanding shares authorized to be repurchased |  |  | 15.00% |  |  |  |  |  |
Minimum purchase price authorized (in dollars per share) | $ / shares |  |  | $ 1.00 |  |  |  |  |  |
Maximum purchase price authorized (in dollars per share) | $ / shares |  |  | $ 25.00 |  |  |  |  |  |
Stock repurchase program, period in force |  |  | 5 years |  |  |  |  |  |
Remaining number of shares available for repurchase under the plan (in shares) |  |  |  |  | 3,100,000 |  |  |  |
Stock Repurchase Programs |  |  |  |  |  |  |  |  |
Equity And Share-Based Compensation |  |  |  |  |  |  |  |  |
Number of shares of common stock purchased (in shares) |  |  |  |  | 0 | 0 |  |  |

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