Schedule IV - Real Estate Mortgage Loans (Mortgage Loan Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Beginning Balance	$ 552,797	$ 642,218	$ 427,117
New loans	0	66,000	1,234,244
Construction draws	0	0	0
Total additions	0	66,000	1,234,244
Principal repayments	(66,597)	(155,170)	(1,011,353)
Total deductions	(66,597)	(155,170)	(1,011,353)
Effect of foreign currency translation	0	(251)	(7,790)
Ending Balance	$ 486,200	$ 552,797	$ 642,218