EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to Altisource	$ 7,165	$ 8,667	$ (1,863)	$ 6,103
Weighted average common shares outstanding, basic (in shares)	15,897	17,033	16,133	17,184
Dilutive effect of stock options, restricted shares and restricted share units (in shares)	254	542	0	485
Weighted average common shares outstanding, diluted (in shares)	16,151	17,575	16,133	17,669
Earnings (loss) per share:
Basic (in usd per share)	$ 0.45	$ 0.51	$ (0.12)	$ 0.36
Diluted (in usd per share)	$ 0.44	$ 0.49	$ (0.12)	$ 0.35
Anti-dilutive securities
Options, restricted shares and restricted share units excluded from the computation of diluted EPS (in shares)	1,500	600	1,600	800
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)	700	100	500	300
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)	800	500	800	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)			300