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Note 4 - Long-term Debt (Details Textual) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 23, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) ft² a Rate | Dec. 31, 2019 USD ($) Rate
Proceeds from Issuance of Long-term Debt, Total |  |  | $ 1,397,000 | $ 1,500,000
Repayments of Long-term Debt, Total |  |  | 2,232,000 | $ 1,700,000
Paycheck Protection Program CARES Act [Member] |  |  |  |
Proceeds from Issuance of Long-term Debt, Total |  | $ 0.20 |  |
Repayments of Long-term Debt, Total | $ 0.20 |  |  |
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 15,000,000 |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 3.65% | 5.19%
Line of Credit Facility, Commitment Fee Amount |  |  | $ 0 |
Debt Instrument, Covenant, Required Minimum Liquidity |  |  | 2,000,000 |
Debt Instrument, Covenant, Maximum Total Liabilities |  |  | $ 45,000,000 |
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member] | Kapalua Mauka [Member] |  |  |  |
Pledged Assets not Separately Reported, Area of Real Estate (Acre) | a |  |  | 800 |
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member] | Kapalua Resort [Member] |  |  |  |
Pledged Assets not Separately Reported, Area of Real Estate (Acre) | ft² |  |  | 30,000 |
First Hawaiian Bank Revolving Line of Credit [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate (Rate) | Rate |  |  | 3.50% |

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- Definition Area of real estate owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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