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Leases - Lease Income (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | $ 49,425 | $ 48,350 | $ 146,225 | $ 130,132
Daney Ranch |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | 16,000 | 3,300 | 21,000 | 6,600
Gold Hill Hotel |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | 13,500 | 24,000 | 61,500 | 72,000
Lab and office space |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | 5,000 | 7,500 | 20,000 | 15,000
Land |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | 4,500 | 4,500 | 13,500 | 13,500
All other residential |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total real estate revenue from operating leases | $ 10,425 | $ 9,050 | $ 30,225 | $ 23,032

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919372-209981 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121561866&loc=SL77919311-209978 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 6A -URI http://asc.fasb.org/extlink&oid=121640914&loc=SL77927221-108306 + Details
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