Business Combinations and Disposals - Fair value and useful lives of intangible assets, Amortization period (Details) - USD ($) $ in Thousands							12 Months Ended
	Apr. 01, 2022	Oct. 27, 2021	Sep. 09, 2021	May 20, 2021	Apr. 05, 2021	Jan. 12, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Customer relationships
Business Acquisition [Line Items]
Estimated Useful Life (in years)							9 years	9 years
Weighted-average amortization period							8 years	9 years	5 years
Acquired technology
Business Acquisition [Line Items]
Estimated Useful Life (in years)							5 years	5 years
Weighted-average amortization period							5 years	4 years	9 years
Trademarks and tradenames
Business Acquisition [Line Items]
Estimated Useful Life (in years)							10 years	12 years
Weighted-average amortization period							9 years	12 years	13 years
Non-compete agreements
Business Acquisition [Line Items]
Estimated Useful Life (in years)							3 years	2 years
Weighted-average amortization period							7 years	2 years	2 years
Value of business acquired
Business Acquisition [Line Items]
Estimated Useful Life (in years)							1 year	1 year
Weighted-average amortization period								7 years
Renewal rights
Business Acquisition [Line Items]
Estimated Useful Life (in years)							6 years	6 years
Weighted-average amortization period								8 years
Residential Warranty Services
Business Acquisition [Line Items]
Fair Value of Intangible assets	$ 14,940
Weighted-average amortization period	7 years 8 months 12 days
Residential Warranty Services | Customer relationships
Business Acquisition [Line Items]
Fair Value of Intangible assets	$ 13,860
Estimated Useful Life (in years)	8 years
Residential Warranty Services | Acquired technology
Business Acquisition [Line Items]
Fair Value of Intangible assets	$ 500
Estimated Useful Life (in years)	3 years
Residential Warranty Services | Trademarks and tradenames
Business Acquisition [Line Items]
Fair Value of Intangible assets	$ 400
Estimated Useful Life (in years)	9 years
Residential Warranty Services | Non-compete agreements
Business Acquisition [Line Items]
Fair Value of Intangible assets	$ 180
Estimated Useful Life (in years)	7 years
January 12, 2021 Acquisition ("V12 Data")
Business Acquisition [Line Items]
Fair Value of Intangible assets						$ 6,440
Weighted-average amortization period						7 years 7 months 6 days
January 12, 2021 Acquisition ("V12 Data") | Customer relationships
Business Acquisition [Line Items]
Fair Value of Intangible assets						$ 1,650
Estimated Useful Life (in years)						10 years
January 12, 2021 Acquisition ("V12 Data") | Acquired technology
Business Acquisition [Line Items]
Fair Value of Intangible assets						$ 3,525
Estimated Useful Life (in years)						4 years
January 12, 2021 Acquisition ("V12 Data") | Trademarks and tradenames
Business Acquisition [Line Items]
Fair Value of Intangible assets						$ 1,225
Estimated Useful Life (in years)						15 years
January 12, 2021 Acquisition ("V12 Data") | Non-compete agreements
Business Acquisition [Line Items]
Fair Value of Intangible assets						$ 40
Estimated Useful Life (in years)						2 years
April 5, 2021 Acquisition ("HOA")
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 41,952
Weighted-average amortization period					9 years 6 months
April 5, 2021 Acquisition ("HOA") | Insurance licenses
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 4,960
April 5, 2021 Acquisition ("HOA") | Customer relationships
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 16,700
Estimated Useful Life (in years)					10 years
April 5, 2021 Acquisition ("HOA") | Trademarks and tradenames
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 12,200
Estimated Useful Life (in years)					10 years
April 5, 2021 Acquisition ("HOA") | Value of business acquired
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 400
Estimated Useful Life (in years)					1 year
April 5, 2021 Acquisition ("HOA") | Renewal rights
Business Acquisition [Line Items]
Fair Value of Intangible assets					$ 7,692
Estimated Useful Life (in years)					8 years
May 20, 2021 Acquisition ("Rynoh")
Business Acquisition [Line Items]
Fair Value of Intangible assets				$ 16,490
Weighted-average amortization period				10 years
May 20, 2021 Acquisition ("Rynoh") | Customer relationships
Business Acquisition [Line Items]
Fair Value of Intangible assets				$ 12,700
Estimated Useful Life (in years)				10 years
May 20, 2021 Acquisition ("Rynoh") | Acquired technology
Business Acquisition [Line Items]
Fair Value of Intangible assets				$ 2,800
Estimated Useful Life (in years)				7 years
May 20, 2021 Acquisition ("Rynoh") | Trademarks and tradenames
Business Acquisition [Line Items]
Fair Value of Intangible assets				$ 900
Estimated Useful Life (in years)				20 years
May 20, 2021 Acquisition ("Rynoh") | Non-compete agreements
Business Acquisition [Line Items]
Fair Value of Intangible assets				$ 90
Estimated Useful Life (in years)				1 year
September 9, 2021 Acquisition ("AHP")
Business Acquisition [Line Items]
Fair Value of Intangible assets			$ 2,742
Weighted-average amortization period			7 years
September 9, 2021 Acquisition ("AHP") | Trademarks and tradenames
Business Acquisition [Line Items]
Estimated Useful Life (in years)			10 years
September 9, 2021 Acquisition ("AHP") | Renewal rights
Business Acquisition [Line Items]
Estimated Useful Life (in years)			6 years
Floify
Business Acquisition [Line Items]
Fair Value of Intangible assets		$ 41,365
Weighted-average amortization period		5 years 7 months 6 days
Floify | Customer relationships
Business Acquisition [Line Items]
Estimated Useful Life (in years)		4 years
Floify | Acquired technology
Business Acquisition [Line Items]
Estimated Useful Life (in years)		4 years
Floify | Trademarks and tradenames
Business Acquisition [Line Items]
Estimated Useful Life (in years)		15 years
Floify | Non-compete agreements
Business Acquisition [Line Items]
Estimated Useful Life (in years)		3 years