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v3.23.1

Note 3 - Assets Held for Sale - Assets Held for Sale (Details) (Parentheticals) - a | Dec. 31, 2022 | Feb. 01, 2022
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Kapalua Central Resort Project [Member] | Kapalua Resort [Member] |  |
Area of real estate (Acre) | 46 |
630-Acre Parcel Of Agricultural Land [Member] | Upcountry Maui [Member] |  |
Area of real estate (Acre) | 646 | 646

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- Definition Area of a real estate property. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |