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Note 2 - Assets Held for Sale and Real Estate Sales - Assets Held for Sale (Details) (Parentheticals) - a | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
630-Acre Parcel Of Agricultural Land [Member] |  |
Area of real estate (Acre) | 630 | 630
Agricultural Land and Wastewater Treatment Facility [Member] | Upcountry Maui [Member] |  |
Area of real estate (Acre) | 33 | 33

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- Definition Area of a real estate property. + References No definition available. + Details
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Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |