Schedule IV - Mortgage Loans on Real Estate - Reconciliation of Mortgage Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of mortgage loans:
Balance at beginning of year	$ 877,102	$ 293,752	$ 145,686
Additions:
Advances on loans receivable	33,555	843,249	214,349
Interest added	49,932	11,815	0
Total additions	83,487	855,064	214,349
Deductions:
Receipts on loans receivable	(181,040)	(214,132)	(17,019)
Loan balance transferred to non-real estate loans receivable	0	(9,142)	(53,071)
Change in allowance for credit losses and charge-offs	2,894	(6,984)	(5,645)
Other	0	(29,619)	(329)
Total deductions	(178,146)	(259,877)	(76,064)
Change in balance due to foreign currency translation	(84,537)	(11,837)	9,781
Balance at end of year	$ 697,906	$ 877,102	$ 293,752