Real Estate Loans Receivable - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended
Mar. 31, 2020 USD ($) loan	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) loan	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest receivable	$ 7,868		$ 7,868		$ 6,897
Non-real estate loans	451,271		451,271		362,850
Allowance for credit losses on non-real estate loans receivable	78,092		78,092		$ 25,996
Provision for loan losses	6,898	$ 18,690	7,072	$ 18,690
Allowance for credit losses	$ 75,372	$ 87,062	$ 75,372	$ 87,062
Number of real estate loans on non-accrual status \| loan	40		40
Carrying value of nonaccrual status	$ 9,534		$ 9,534
Non-real estate loans receivable
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-real estate loans	86,411		86,411
Allowance for credit losses on non-real estate loans receivable	$ 42,376		$ 42,376

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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Amount of financing receivable on nonaccrual status.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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