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Business Segments Revenues from External Customers for Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from External Customer [Line Items]
Real estate revenue	$ 6,887	$ 892	$ 14,831	$ 8,216
Leasing operations	3,090	5,376	9,370	15,057
Revenues	9,977	6,268	24,201	23,273
Real estate operations
Revenue from External Customer [Line Items]
Real estate revenue	6,887	892	14,831	8,216
Real Estate Operations | Developed Property
Revenue from External Customer [Line Items]
Real estate revenue	0	0	2,382	4,615
Real Estate Operations | Undeveloped Property
Revenue from External Customer [Line Items]
Real estate revenue	6,887	750	12,331	3,250
Real Estate Operations | Commissions and other
Revenue from External Customer [Line Items]
Real estate revenue	0	142	118	351
Leasing Operations
Revenue from External Customer [Line Items]
Leasing operations	$ 3,090	$ 5,376	$ 9,370	$ 15,057

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Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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