SHAREHOLDERS' EQUITY AND SHARE-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Millions | May 15, 2018$ / sharesshares | Apr. 30, 2018 | Dec. 31, 2021USD ($)votecomponent$ / sharesshares | Dec. 31, 2020USD ($)shares |
Common Stock [Abstract] | | | | |
Common stock, shares authorized (in shares) | | | 100,000,000 | 100,000,000 |
Common stock, shares issued (in shares) | | | 25,413,000 | 25,413,000 |
Common stock, shares outstanding (in shares) | | | 15,911,000 | 15,664,000 |
Voting rights per share | vote | | | 1,000 | |
Equity Incentive Plan [Abstract] | | | | |
Maximum number of Altisource share-based awards that can be granted under the Plan (in shares) | | | 6,700,000 | |
Share-based awards available for future grants under the Plan (in shares) | | | 1,200,000 | |
Share Repurchase Program [Abstract] | | | | |
Authorized amount (approximately) | $ | | | $ 80 | |
Capacity available to repurchase common stock under senior secured term loan | $ | | | 437 | |
Share-Based Compensation [Abstract] | | | | |
Share-based compensation expense | $ | | | 2.8 | $ 7.8 |
Estimated unrecognized compensation costs | $ | | | $ 2.4 | |
Weighted average remaining requisite service period for stock options over which unrecognized compensation costs would be recognized | | | 1 year 3 months 14 days | |
Options outstanding (in shares) | | | 687,339 | 899,914 |
Term B Loans | | | | |
Share Repurchase Program [Abstract] | | | | |
Covenant threshold, leverage ratio | | 3.50 | 3.50 | |
Stock Repurchase Program, Current | | | | |
Share Repurchase Program [Abstract] | | | | |
Number of shares of common stock authorized to be purchased (in shares) | 4,300,000 | | | |
Percentage of outstanding shares authorized to be repurchased | 25.00% | | | |
Minimum purchase price authorized (in dollars per share) | $ / shares | $ 1 | | | |
Maximum purchase price authorized (in dollars per share) | $ / shares | $ 500 | | | |
Stock repurchase program, period in force | 5 years | | | |
Remaining number of shares available for repurchase under the plan (in shares) | | | 2,400,000 | |
Stock Repurchase Programs | | | | |
Share Repurchase Program [Abstract] | | | | |
Number of shares of common stock purchased (in shares) | | | 0 | |
Stock Options | | | | |
Share-Based Compensation [Abstract] | | | | |
Stock options granted, approximate (in shares) | | | 0 | 0 |
Stock Options, Service-Based | | | | |
Share-Based Compensation [Abstract] | | | | |
Options outstanding (in shares) | | | 181,000 | |
Stock Options, Service-Based | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 3 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 3 years | |
Stock Options, Service-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 4 years | |
Expiration term | | | 10 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 4 years | |
Stock Options, Market-Based | | | | |
Share-Based Compensation [Abstract] | | | | |
Options outstanding (in shares) | | | 140,000 | |
Number of components of an award | component | | | 2 | |
Allowable performance period before expiration date | | | 3 years | |
Stock Options, Market-Based | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 3 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 3 years | |
Stock Options, Market-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 4 years | |
Expiration term | | | 10 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 4 years | |
Ordinary performance | | | | |
Share-Based Compensation [Abstract] | | | | |
Percentage of awards | | | 67.00% | |
Vesting threshold | | | 2 | |
Ordinary performance | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Percentage of compounded annual gain of stock price over exercise price required for the award to vest | | | 20.00% | |
Extraordinary performance | | | | |
Share-Based Compensation [Abstract] | | | | |
Percentage of awards | | | 33.00% | |
Extraordinary performance | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Percentage of compounded annual gain of stock price over exercise price required for the award to vest | | | 25.00% | |
Stock Options, Performance-Based | | | | |
Share-Based Compensation [Abstract] | | | | |
Options outstanding (in shares) | | | 366,000 | |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche One | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 25.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 25.00% | |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Two | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 25.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 25.00% | |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Three | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 25.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 25.00% | |
Stock Options, Performance-Based | Share-based Payment Arrangement, Tranche Four | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 25.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 25.00% | |
Stock Options, Performance-Based | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Allowable performance period before expiration date | | | 10 years | |
Attainment above threshold performance levels, vesting percentage | | | 50.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Attainment above threshold performance levels, vesting percentage | | | 50.00% | |
Stock Options, Performance-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Attainment above threshold performance levels, vesting percentage | | | 200.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Attainment above threshold performance levels, vesting percentage | | | 200.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Service-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, outstanding (in shares) | | | 249,000 | |
Restricted Shares and Restricted Stock Units (RSUs), Service-Based | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 2 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 2 years | |
Restricted Shares and Restricted Stock Units (RSUs), Service-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 4 years | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 4 years | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, outstanding (in shares) | | | 187,000 | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche One | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 33.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 33.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche Two | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 33.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 33.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Share-based Payment Arrangement, Tranche Three | | | | |
Share-Based Compensation [Abstract] | | | | |
Award vesting rights, percentage | | | 33.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Award vesting rights, percentage | | | 33.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Attainment above threshold performance levels, vesting percentage | | | 150.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Attainment above threshold performance levels, vesting percentage | | | 150.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Market-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, outstanding (in shares) | | | 112,000 | |
Restricted Shares and Restricted Stock Units (RSUs), Market-Based | Minimum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 30 days | |
Award vesting rights, percentage | | | 50.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 30 days | |
Award vesting rights, percentage | | | 50.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Market-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Vesting period | | | 1 year | |
Award vesting rights, percentage | | | 50.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Vesting period | | | 1 year | |
Award vesting rights, percentage | | | 50.00% | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based and Market-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, outstanding (in shares) | | | 77,000 | |
Restricted Shares and Restricted Stock Units (RSUs), Performance-Based and Market-Based | Maximum | | | | |
Share-Based Compensation [Abstract] | | | | |
Attainment above threshold performance levels, vesting percentage | | | 300.00% | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Attainment above threshold performance levels, vesting percentage | | | 300.00% | |
Restricted Share Units | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, granted (in shares) | | | 368,000 | |
Other than options, granted (in dollars per share) | $ / shares | | | $ 9.57 | |
Restricted Stock Units (RSUs), Performance-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, granted (in shares) | | | 29,000 | |
Restricted Stock Units (RSUs), Market-Based | | | | |
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity | | | | |
Other than options, granted (in shares) | | | 89,000 | |