Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Debt Obligations - Component (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 29, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Obligations
Applicable Interest Rate (as a percent)		3.87%
Outstanding Balance		$ 659,421		$ 649,382
Available for borrowing		$ 493,100		510,100
Repayment paid			$ 28,000
Minimum
Debt Obligations
Interest rate (as a percent)		5.00%
Maximum
Debt Obligations
Interest rate (as a percent)		8.00%
Bank Borrowings
Debt Obligations
Applicable Interest Rate (as a percent)		1.30%
Outstanding Balance		$ 106,900		89,900
Available for borrowing		$ 493,100		510,100
Repayment paid			$ 28,000
Bank Borrowings \| Subsequent Event
Debt Obligations
Outstanding Balance	$ 101,900
Available for borrowing	498,100
Repayment paid	$ 5,000
Senior Unsecured Notes
Debt Obligations
Applicable Interest Rate (as a percent)		4.37%
Outstanding Balance		$ 552,521		$ 559,482
Senior Unsecured Notes \| Minimum
Debt Obligations
Interest rate (as a percent)		3.85%
Senior Unsecured Notes \| Maximum
Debt Obligations
Interest rate (as a percent)		5.03%