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Note 17 - Subsequent Events (Details Textual) - Subsequent Event [Member] | Oct. 22, 2024 USD ($) a
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Land in Honokeana [Member] | Stewardship and Conservation Efforts Subsidized by the State of Hawaii and the County of Maui [Member] |
Area of Land (Acre) | 50
Government Assistance, Award Amount | $ | $ 35,500,000
Maui [Member] |
Area of Land (Acre) | 1,377

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
- Definition Amount of government assistance awarded that comprises amount received, receivable, and to be received unless condition for government assistance is not met. Includes, but is not limited to, government grant, assistance, incentive, award, subsidy, and loan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 832 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483507/832-10-50-3 + Details
Name: | us-gaap_GovernmentAssistanceAwardAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Details
Name: | srt_CounterpartyNameAxis=mlp_StewardshipAndConservationEffortsSubsidizedByTheStateOfHawaiiAndTheCountyOfMauiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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