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Business Segments (Details Narrative) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) a integer | Jun. 30, 2019 USD ($) a Segments integer | Dec. 31, 2018 USD ($) | May 21, 2018 USD ($) integer
Reportable business segments | Segments |  | 4 |  |
Discontinued Operations, Disposed of by Sale [Member] |  |  |  |
Warehouse properties |  |  |  | 40
Land parcels |  |  |  | 3
Sales price | $ | $ 11,700 | $ 11,700 | $ 347,200 |
Excluded [Member] |  |  |  |
Warehouse properties |  |  |  | 1
Property value | $ |  |  |  | $ 11,700
Mining royalty lands |  |  |  |
Mining royalty lands acres | a | 15,000 | 15,000 |  |
Brooksville Quarry, LLC |  |  |  |
Mining royalty lands acres | a | 4,280 | 4,280 |  |
Asset Management |  |  |  |
Warehouse properties | 2 | 2 |  |
Industrial acquision | 1 | 1 |  |

X
- References No definition available. + Details
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Namespace Prefix: | FRPH_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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