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Note 4 - Property & Equipment (Details Textual) - Land [Member] | 12 Months Ended
--- | ---
Dec. 31, 2023 a ft²
Area of Land (Acre) | 22,300
West Maui [Member] |
Area of Land (Acre) | 20,000
Area of Elevation from Sea (Square Foot) | ft² | 5,700
West Maui [Member] | Kapalua Resort [Member] |
Area of Land (Acre) | 3,000
Area of Land Designated (Acre) | 900
Upcountry Maui [Member] |
Area of Land (Acre) | 1,500

X
- Definition Represents the area of elevation from sea. + References No definition available. + Details
Name: | mlp_AreaOfElevationFromSeaFeet
Namespace Prefix: | mlp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the area of land designated. + References No definition available. + Details
Name: | mlp_AreaOfLandDesignated
Namespace Prefix: | mlp_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Area of land held. + References No definition available. + Details
Name: | us-gaap_AreaOfLand
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=mlp_WestMauiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=mlp_KapaluaResortMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=mlp_UpcountryMauiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |