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Carrying value of property owned by the Company which is leased or held for lease (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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Leases [Abstract] |
Construction aggregates property | $ 35,076
Commercial property | 76,580
Residential/mixed use property | 293,821
Carrying Value of property owned by the Company leased or held for lease, gross | 405,477
Less accumulated depreciation and depletion | 46,270
Carrying Value of property owned by the Company leased or held for lease, net | $ 359,207

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- Definition Accumulated Depreciation and Depletion of leased real estate + References No definition available. + Details
Name: | FRPH_AccumulatedDepreciationDepletionRealEstateLeased
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Commercial Property + References No definition available. + Details
Name: | FRPH_CommercialProperty
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | FRPH_ConstructionAggregatesProperty
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | FRPH_RealEstateLeasedCarryingValueGross
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | FRPH_RealEstateLeasedCarryingValueNet
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | FRPH_ResidentialMixedUseProperty
Namespace Prefix: | FRPH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration