Supplemental Financial Statement Information - Other And Intangible Assets (Details) - USD ($)	12 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018	Dec. 01, 2019
Other Assets
Deferred rent receivable	$ 6,610,000	$ 5,740,000
Deferred leasing costs, net	5,453,000	4,468,000
Prepaid expenses	3,206,000	2,926,000
Intangible assets, net	2,170,000	1,907,000
Land sale proceeds held in escrow	1,993,000
Deposits	1,078,000	234,000
Right-of-use assets	716,000			$ 858,000
Account receivable (primary leases)	499,000	904,000
Mortgage escrows	491,000	515,000
Registration statement costs	281,000	281,000
Furniture, fixtures and equipment, net	183,000	193,000
Deferred financing costs related to revolving lines of credit	180,000	256,000
Other	285,000	154,000
Total other assets	23,145,000	17,578,000
Intangibles assets
Accumulated amortization	2,156,000	1,578,000
Amortization expense	578,000	307,000	$ 296,000
Estimated amortization expense
2021	535,000
2022	377,000
2023	331,000
2024	331,000
2025	248,000
Property and equipment
Deferred leasing costs accumulated amortization	7,359,000	6,699,000
Amortization of deferred lease costs	1,074,000	998,000	1,159,000
Property and equipment accumulated depreciation	1,065,000	992,000
Depreciation expense	$ 82,000	$ 80,000	$ 96,000