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Note 2 - Assets Held for Sale and Real Estate - Assets Held for Sale (Details) (Parentheticals) - a	Dec. 31, 2017	Dec. 31, 2016
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)	80	80
Kapalua Resort, Golf Practice Course [Member] | Kapalua Resort [Member]
Area of real estate (Acre)		15

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- Details

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- Details

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Namespace Prefix:
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X

- Details

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- Details

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- Details

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