Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Note 6 - Assets Held for Sale (Details Textual)	Mar. 31, 2022 USD ($) a	Feb. 01, 2022 USD ($) a	Dec. 31, 2021 USD ($) a
Kapalua Central Resort Project [Member]
Receivables, Long-term Contracts or Programs, Total			$ 40,000,000.0
Kapalua Central Resort Project [Member] \| Deposits held in Escrow for Properties Held for Sale [Member]
Restricted Cash and Cash Equivalents, Total	$ 300,000
630-Acre Parcel Of Agricultural Land [Member] \| Upcountry Maui [Member]
Receivables, Long-term Contracts or Programs, Total		$ 9,700,000
Area of Real Estate Property (Acre) \| a	646	646	646
630-Acre Parcel Of Agricultural Land [Member] \| Deposits held in Escrow for Properties Held for Sale [Member] \| Upcountry Maui [Member]
Restricted Cash and Cash Equivalents, Total	$ 2,000,000.0