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Loans Receivable - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended
Loans Receivable - Narrative (Details) $ in Thousands	Apr. 29, 2021 GBP (£)	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) loan	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest receivable			$ 15,981		$ 15,615
Non-real estate loans			458,391		455,508
Allowance for credit losses on non-real estate loans receivable			215,463		$ 215,239
Provision for loan losses		$ 6,898	$ 1,383	$ 7,072
No. of Loans \| loan			52
Financing receivable			$ 730,602
HC-One Limited \| Subsequent event
Financing Receivable, Troubled Debt Restructuring [Line Items]
Equity investments \| £	£ 55,000,000
Safanad \| Subsequent event
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable \| £	540,000,000
Working capital facility \| £	£ 30,000,000
Term of receivable	5 years