LOSS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net loss attributable to Altisource	$ (35,061)	$ (5,844)	$ (46,711)	$ (9,028)
Weighted average common shares outstanding, basic (in shares)	15,601	16,214	15,549	16,253
Weighted average common shares outstanding, diluted (in shares)	15,601	16,214	15,549	16,253
Loss per share:
Basic (in usd per share)	$ (2.25)	$ (0.36)	$ (3.00)	$ (0.56)
Diluted (in usd per share)	$ (2.25)	$ (0.36)	$ (3.00)	$ (0.56)
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	1,500	1,500	1,800	1,500
Employee and Nonemployee Stock Options, Restricted Stock and Restricted Stock Units Whose Impacts are Anti-Dilutive
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	100	300	200	300
Options Whose Exercise Price is Greater than Average Market Price
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	300	500	600	400
Options and Restricted Shares Issuable upon Achievement of Certain Market and Performance Criteria That Has Not Been Met
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	1,100	700	1,000	800