Share-Based Compensation - Summary of Recognition of Share-Based Compensation related to Employees (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
Jan. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2021
Share-based employee compensation expense
Allocated share based compensation expense	$ 3,976	$ 1,343	$ 530	$ 1,331	$ 4,569
Cost of Services [Member]
Share-based employee compensation expense
Allocated share based compensation expense	156	3	28	69	76
Product and Technology Expense [Member]
Share-based employee compensation expense
Allocated share based compensation expense	0	55	50	127	176
Selling, General and Administrative Expenses [Member]
Share-based employee compensation expense
Allocated share based compensation expense	$ 3,820	$ 1,285	$ 452	$ 1,135	$ 4,317

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration