Summary of Significant Accounting Policies - Divestiture (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) facility	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 01, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price from divestiture of businesses		$ 0	$ 0	$ 84,433	$ 84,433
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Senior living facility | facility	1
Sale price from divestiture of businesses	$ 1,838