OTHER INCOME (EXPENSE), NET (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Other Income and Expenses [Abstract]
Interest (expense) income	$ (21)	$ 74
Other, net	970	1,020
Total	$ 949	$ 1,094

The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Amounts exclude: (a) equity loss in affiliate, (b) interest expense, (c) interest income, and (d) change in fair value of put options.

No definition available.

Name:	asps_OtherNonoperatingIncomeExpenseOther
Namespace Prefix:	asps_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration