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Note 5 - Disposition Activities (Details Textual) |  |  | 1 Months Ended
--- | --- | --- | ---
Dec. 07, 2019 USD ($) a | Aug. 27, 2019 USD ($) a | Aug. 30, 2018 USD ($)
Flowerfield Complex in Smithtown, New York [Member] |  |  |
Area of Land | a |  | 9 |
Flowerfield Complex in Smithtown, New York [Member] | BSL St. James LLC [Member] |  |  |
Proceeds from Sale of Property, Plant, and Equipment, Total |  | $ 16,800,000 |
Cortlandt Manor Property In New York [Member] |  |  |
Area of Land | a | 4.5 |  |
Proceeds from Sale of Property, Plant, and Equipment, Total | $ 5,720,000 |  |
Port Jefferson Professional Park [Member] |  |  |
Proceeds from Sale of Property, Plant, and Equipment, Total |  |  | $ 800,000

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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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