Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Supplemental disclosure of cash activities:
Cash paid for interest	$ 5,467,000	$ 12,273,000
Supplemental disclosure of non-cash activities:
Capitalization of interest and financing costs	0	1,035,000
Buildings and improvements included in accounts payable, accrued expenses, and other liabilities	407,000	641,000
Payoff of mortgages through mortgage assumptions	$ 0	$ 157,925,000