Cover - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 05, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-34354
Entity Registrant Name	ALTISOURCE PORTFOLIO SOLUTIONS S.A.
Entity Incorporation, State or Country Code	N4
Entity Tax Identification Number	98-0554932
Entity Address, Address Line One	40, avenue Monterey
Entity Address, Postal Zip Code	L-2163
Entity Address, City or Town	Luxembourg
Entity Address, Country	LU
City Area Code	352
Local Phone Number	27 61 49 00
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	ASPS
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 168,425,446
Entity Common Stock, Shares Outstanding		15,746,525
Documents Incorporated by Reference	Portions of the registrant’s Definitive Proxy Statement to be filed subsequent to the date hereof with the Securities and Exchange Commission pursuant to Regulation 14A in connection with the registrant’s Annual Meeting of Shareholders to be held on May 18, 2021 are incorporated by reference into Part III of this report. Such Definitive Proxy Statement will be filed with the Securities and Exchange Commission not later than 120 days after the conclusion of the registrant’s fiscal year ended December 31, 2020.
Entity Central Index Key	0001462418
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY