Acquisitions - Narrative (Details) $ in Thousands					6 Months Ended	12 Months Ended
	May 03, 2022 USD ($)	Apr. 01, 2022 company	Mar. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition
Number of businesses acquired | company		2
Goodwill					$ 705,199	$ 657,131	$ 560,332
Open Realty
Business Acquisition
Cash and stock issued at closing	$ 65,533
Contingent Consideration	12,195
Goodwill	50,997
Business acquisition, amount deductible for tax	$ 39,400
Business acquisition, aggregate revenue contribution					4,500
Knotel, Inc.
Business Acquisition
Shares issued as compensation						110,400
Cash and stock issued at closing			$ 44,492
Contingent Consideration						6,574
Goodwill						97,639
Business acquisition, amount deductible for tax						78,300
Business acquisition, aggregate revenue contribution						75,600
Debtor-in-possession facility financing costs				$ 19,800
First and second lien debt						39,584
Debtor-in-possession financing						19,788
Cash and stock issued at closing						41,500
Stock issued at closing						3,000
Deskeo
Business Acquisition
Debt securities						13,800
Unrealized (gains) on investments						$ 27,800
Restricted Stock Units (RSUs) | Open Realty
Business Acquisition
Shares issued as compensation					$ 77,700