EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
EARNINGS PER SHARE
Net income attributable to Altisource (in dollars)	$ 27,024	$ 17,171	$ 80,334	$ 45,381
Weighted-average common shares outstanding, basic	23,338,000	24,341,000	23,347,000	24,602,000
Dilutive effect of stock options (in shares)	1,678,000	1,148,000	1,548,000	1,118,000
Weighted-average common shares outstanding, diluted	25,016,000	25,489,000	24,895,000	25,720,000
Earnings per share
Basic (in dollars per share)	$ 1.16	$ 0.71	$ 3.44	$ 1.84
Diluted (in dollars per share)	$ 1.08	$ 0.67	$ 3.23	$ 1.76
Options excluded from the computation of diluted EPS (in shares)	200,000	700,000	300,000	700,000