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CONCENTRATION OF CREDIT RISK - Holiday Transaction (Details) $ in Thousands	1 Months Ended
	Apr. 30, 2020 USD ($) senior_housing	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($)
Concentration Risk [Line Items]
Number of real estate properties \| property		1,300
Cash and cash equivalents		$ 122,564	$ 149,725
Secured/mortgage loans and other, net
Concentration Risk [Line Items]
repayment of loan		$ 513,669	$ 488,913
Holiday Management Company Member
Concentration Risk [Line Items]
Number of real estate properties \| senior_housing	26
Triple-net leased rental income	$ 50,200
Cash and notes received	99,800
Write-off of accumulated straight-line receivable	49,600
Holiday Management Company Member \| Secured/mortgage loans and other, net
Concentration Risk [Line Items]
repayment of loan	66,000
Holiday Management Company Member \| Transfer Of Lease Deposit To Cash
Concentration Risk [Line Items]
Cash and cash equivalents	$ 33,800