ACQUISITIONS Pro Forma Results (Details 4) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pro forma consolidated results of operations
Revenue, As reported																	$ 1,078,916	$ 768,357	$ 568,360
Revenue, Pro forma																		854,098	781,834
Net income attributable to Altisource, As reported	(1,535)	[1],[2]	42,287	[1],[2]	54,101	[1],[2]	39,631	[1],[2]	35,516	[1],[3]	36,008	[1],[3]	30,931	[1],[3]	27,518	[1],[3]	134,484	129,973	110,627
Net income attributable to Altisource, Pro forma																		$ 132,907	$ 129,229
Earnings per share - Diluted (in dollars per share), As reported	$ (0.08)	[1],[2]	$ 1.79	[1],[2]	$ 2.24	[1],[2]	$ 1.61	[1],[2]	$ 1.42	[1],[3]	$ 1.42	[1],[3]	$ 1.25	[1],[3]	$ 1.10	[1],[3]	$ 5.69	$ 5.19	$ 4.43
Earnings per share - Diluted (in dollars per share), Pro forma																		$ 5.31	$ 5.18

[1] The sum of quarterly amounts, including per share amounts, may not equal amounts reported for year-to-date periods. This is due to the effects of rounding and changes in the number of weighted average shares outstanding for each period.

[2] We acquired Mortgage Builder on September 12, 2014 and acquired Owners.com on November 21, 2014 (see Note 5).

[3] We acquired the Homeward fee-based businesses on March 29, 2013, completed the ResCap fee-based business transaction on April 12, 2013 and acquired Equator on November 15, 2013 (see Note 5).