COMMITMENTS, CONTINGENCIES AND REGULATORY MATTERS (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017	[1],[2]	Jun. 30, 2017		Mar. 31, 2017	[1],[2]	Dec. 31, 2016		Sep. 30, 2016	[2],[3],[4]	Jun. 30, 2016	[2],[3],[4]	Mar. 31, 2016	[2],[3],[4]	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Revenue	$ 216,066	[1],[2]	$ 234,979		$ 250,685	[1],[2]	$ 240,483		$ 238,627	[2],[3],[4]	$ 252,745		$ 255,799		$ 250,132		$ 942,213	$ 997,303	$ 1,051,466
Escrow and Trust Balances
Amounts held in escrow and trust accounts	$ 35,100								$ 64,100								$ 35,100	$ 64,100
Customer Concentration Risk | Ocwen | Revenue, Segment
Concentration Risk [Line Items]
Percentage of revenue from largest customer																	58.00%	56.00%	60.00%
Customer Concentration Risk | Highly Correlated - Ocwen | Revenue, Segment
Concentration Risk [Line Items]
Percentage of revenue from largest customer																	16.00%
Customer Concentration Risk | NRZ | Revenue, Segment
Concentration Risk [Line Items]
Estimated percentage of revenue from largest customer																	50.00%
Service revenue
Concentration Risk [Line Items]
Revenue																	$ 899,561	$ 942,599	$ 940,920
REALServicing | Service revenue | Ocwen
Concentration Risk [Line Items]
Revenue																	$ 26,400	$ 29,800	$ 50,300
NRZ | Ocwen
Concentration Risk [Line Items]
Non-government-sponsored enterprise servicing rights					78.00%

[1] On December 27, 2017, two of the Company’s wholly-owned subsidiaries, Altisource Solutions S.à r.l. and Altisource Holdings S.à r.l., merged, with Altisource Holdings S.à r.l. as the surviving entity. Altisource Holdings S.à r.l. was subsequently renamed Altisource S.à r.l. The merger is part of a larger subsidiary restructuring plan designed to simplify the Company’s corporate structure, allow it to operate more efficiently and reduce administrative costs. For Luxembourg tax purposes, the merger was recognized at fair value and generated an NOL of $1.3 billion and a deferred tax asset, net of valuation allowance, of $300.9 million as of December 31, 2017. The NOL has a 17 year life. This deferred tax asset was partially offset by the impact of other changes in U.S. and Luxembourg income tax rates of $6.3 million and an increase in certain foreign income tax reserves (and related interest) of $10.5 million. See Note 21.

[2] 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.

[3] During the fourth quarter of 2016, Altisource recorded a litigation settlement loss of $32.0 million in connection with a litigation matter. Also during the fourth quarter of 2016, Altisource recorded an insurance recovery related to this litigation settlement of $4.0 million. See Note 19.

[4] We acquired Granite on July 29, 2016. See Note 5.