Business Combinations - Acquisitions (Details) $ in Thousands				3 Months Ended		6 Months Ended		12 Months Ended
	May 20, 2021 USD ($)	Apr. 05, 2021 USD ($)	Jan. 12, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) item	Jun. 30, 2020 USD ($)	Dec. 31, 2020
Business Combinations
Contingent consideration				$ 1,714		$ 1,714
Unaudited Pro Forma Consolidated Financial Information
Revenue				52,867	$ 36,086	97,610	$ 68,837
Net loss				(17,102)	$ (8,408)	(79,417)	$ (27,608)
General and administrative
Business Combinations
Acquisition related costs						4,900
January 12,2021 Acquisition
Business Combinations
Cash paid in business acquisition			$ 20,346
Total consideration			21,756
Contingent consideration			$ 1,400
Contingent consideration earnout period			2 years
Net assets acquired			$ 21,756
Estimated fair value			$ 1,410
Estimated Useful Life (in years)			7 years 7 months 6 days
Fair value of the intangible assets as of the date of the acquisition
Fair Value			$ 6,440
January 12,2021 Acquisition | General and administrative
Business Combinations
Acquisition related costs						274
HOA acquisition
Business Combinations
Cash paid in business acquisition		$ 82,002
Total consideration		113,388
Issuance of common stock		21,687
Net assets acquired		113,388
Acquisition hold backs		9,700
Estimated fair value		6,685
Acquisition related costs		$ 2,900
Estimated Useful Life (in years)		8 years 4 months 24 days
May 20, 2021 Acquisition
Business Combinations
Cash paid in business acquisition	$ 32,302
Total consideration	35,802
Net assets acquired	35,802
Acquisition hold backs	3,500
Acquisition related costs	$ 1,600
Estimated Useful Life (in years)	10 years
Other Acquisitions
Business Combinations
Cash paid in business acquisition						13,490
Total consideration						14,986
Issuance of common stock						1,169
Net assets acquired				14,986		14,986
Estimated fair value						$ 327
Number of acquisitions | item						2
Goodwill to be not deductible for income tax purposes				3,600		$ 3,600
Goodwill to be deductible for income tax purposes				3,300		3,300
Other Acquisitions | General and administrative
Business Combinations
Acquisition related costs						144
Total Acquisition
Business Combinations
Cash paid in business acquisition						148,140
Total consideration						185,932
Issuance of common stock						22,856
Net assets acquired				$ 185,932		185,932
Estimated fair value						$ 8,422
Number of acquisitions | item						3
Revenue						$ 27,900
Net income						$ 4,300
Customer relationships
Business Combinations
Estimated Useful Life (in years)						10 years
Fair value of the intangible assets as of the date of the acquisition
Estimated Useful Life (in years)						10 years		7 years
Customer relationships | January 12,2021 Acquisition
Fair value of the intangible assets as of the date of the acquisition
Fair Value			$ 1,650
Estimated Useful Life (in years)			10 years
Customer relationships | HOA acquisition
Business Combinations
Estimated Useful Life (in years)		10 years
Customer relationships | May 20, 2021 Acquisition
Business Combinations
Estimated Useful Life (in years)	10 years
Acquired technology
Business Combinations
Estimated Useful Life (in years)						5 years
Fair value of the intangible assets as of the date of the acquisition
Estimated Useful Life (in years)						6 years		6 years
Acquired technology | January 12,2021 Acquisition
Fair value of the intangible assets as of the date of the acquisition
Fair Value			$ 3,525
Estimated Useful Life (in years)			4 years
Acquired technology | May 20, 2021 Acquisition
Business Combinations
Estimated Useful Life (in years)	7 years
Trademarks and tradenames
Business Combinations
Estimated Useful Life (in years)						11 years
Fair value of the intangible assets as of the date of the acquisition
Estimated Useful Life (in years)						11 years		9 years
Trademarks and tradenames | January 12,2021 Acquisition
Fair value of the intangible assets as of the date of the acquisition
Fair Value			$ 1,225
Estimated Useful Life (in years)			15 years
Trademarks and tradenames | HOA acquisition
Business Combinations
Estimated Useful Life (in years)		10 years
Trademarks and tradenames | May 20, 2021 Acquisition
Business Combinations
Estimated Useful Life (in years)	20 years
Non-competition agreements
Business Combinations
Estimated Useful Life (in years)						1 year
Fair value of the intangible assets as of the date of the acquisition
Estimated Useful Life (in years)						2 years		2 years
Non-competition agreements | January 12,2021 Acquisition
Fair value of the intangible assets as of the date of the acquisition
Fair Value			$ 40
Estimated Useful Life (in years)			2 years
Non-competition agreements | May 20, 2021 Acquisition
Business Combinations
Estimated Useful Life (in years)	1 year