CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenue	$ 365,547	$ 648,651	$ 838,202
Cost of revenue	305,194	493,256	622,165
Gross profit	60,353	155,395	216,037
Selling, general and administrative expenses	92,736	141,076	175,670
Gain on sale of businesses	0	(17,814)	(13,688)
Restructuring charges	11,972	14,080	11,560
(Loss) income from operations	(44,355)	18,053	42,495
Other income (expense), net:
Interest expense	(17,730)	(21,393)	(26,254)
Unrealized gain (loss) on investment in equity securities	4,004	14,431	(12,972)
Other income (expense), net	375	1,348	(1,870)
Total other income (expense), net	(13,351)	(5,614)	(41,096)
(Loss) income before income taxes and non-controlling interests	(57,706)	12,439	1,399
Income tax provision	(8,609)	(318,296)	(4,098)
Net loss	(66,315)	(305,857)	(2,699)
Net income attributable to non-controlling interests	(841)	(2,112)	(2,683)
Net loss attributable to Altisource	$ (67,156)	$ (307,969)	$ (5,382)
Loss per share:
Basic (in dollars per share)	$ (4.31)	$ (19.26)	$ (0.32)
Diluted (in dollars per share)	$ (4.31)	$ (19.26)	$ (0.32)
Weighted average shares outstanding:
Basic (in shares)	15,598	15,991	17,073
Diluted (in shares)	15,598	15,991	17,073
Other comprehensive loss, net of tax:
Reclassification of unrealized gain on investment in equity securities, net of income tax provision of $200, to retained earnings from the cumulative effect of an accounting change	$ 0	$ 0	$ (733)
Comprehensive loss, net of tax	(66,315)	(305,857)	(3,432)
Comprehensive income attributable to non-controlling interests	(841)	(2,112)	(2,683)
Comprehensive loss attributable to Altisource	$ (67,156)	$ (307,969)	$ (6,115)