(LOSS) EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net (loss) income attributable to Altisource	$ (13,237)	$ 7,165	$ (59,948)	$ (1,863)
Weighted average common shares outstanding, basic (in shares)	15,637	15,897	15,578	16,133
Dilutive effect of stock options, restricted shares and restricted share units (in shares)	0	254	0	0
Weighted average common shares outstanding, diluted (in shares)	15,637	16,151	15,578	16,133
(Loss) earnings per share:
Basic (in usd per share)	$ (0.85)	$ 0.45	$ (3.85)	$ (0.12)
Diluted (in usd per share)	$ (0.85)	$ 0.44	$ (3.85)	$ (0.12)
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	1,400	1,500	1,600	1,600
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)	200		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	700		500
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)	900	800	900	800