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Leases - Property leased or held for lease (Details) - Property leased or held for lease $ in Thousands | Sep. 30, 2015 USD ($)
--- | ---
Construction aggregates property | $ 35,087
Commercial property | 256,129
Carrying Value of property owned by the Company leased or held for lease, gross | 291,216
Less accumulated depreciation and depletion | 72,993
Carrying Value of property owned by the Company leased or held for lease, net | $ 218,223

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

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

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

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

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

X
- Details
Name: | us-gaap_RealEstatePropertiesAxis=us-gaap_PropertySubjectToOperatingLeaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |