Revenue	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue	5. RevenueFor the three months ended March 31, 2023 and 2022, the Company generated 93.6% and 93.4%, respectively, of its resident fee revenue from private pay customers and the remainder from government reimbursement programs and other payor sources. Refer to Note 15 for disaggregation of revenue by reportable segment.The payment terms and conditions within the Company's revenue-generating contracts vary by contract type and payor source, although terms generally include payment to be made within 30 days. Resident fee revenue for recurring and routine monthly services is generally billed monthly in advance under the Company's independent living, assisted living, and memory care residency agreements. Resident fee revenue for standalone or certain healthcare services is generally billed monthly in arrears. Additionally, non-refundable community fees are generally billed and collected in advance or upon move-in of a resident under the Company's independent living, assisted living, and memory care residency agreements. Amounts of revenue that are collected from residents in advance are recognized as deferred revenue until the performance obligations are satisfied. The Company had total deferred revenue (included within refundable fees and deferred revenue, liabilities held for sale, and other liabilities within the condensed consolidated balance sheets) of $80.9 million and $67.3 million, including $35.3 million and $25.2 million of monthly resident fees billed and received in advance, as of March 31, 2023 and December 31, 2022, respectively. For the three months ended March 31, 2023 and 2022, the Company recognized $36.9 million and $40.1 million, respectively, of revenue that was included in the deferred revenue balance as of January 1, 2023 and 2022, respectively.