Name:	fnhc_AggregateCatastropheCoveragePerYearWithMaximumSingleEventCoverage
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount retained by the Company for each loss.

No definition available.

Name:	fnhc_AmountRetainedPerLoss
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the combined percentage of quota share reinstatement treaty.

No definition available.

Name:	fnhc_CombinedPercentageOfQuotaShareReinstatementTreaty
Namespace Prefix:	fnhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the amount of coverage afforded by FHCF.

No definition available.

Name:	fnhc_CoverageAffordedByFhcf
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount of covered loss retained by the company.

No definition available.

Name:	fnhc_CoveredLossRetained
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of covered loss as of the balance sheet date.

No definition available.

Name:	fnhc_CoveredLosses
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of estimated liability as of the balance sheet date for the specific conflagration, earthquake, windstorm, explosion, or similar event per year with maximum single event coverage.

No definition available.

Name:	fnhc_CoveredLossesForTheCompanySInForceNewAndRenewalHomeownersInsuranceProgram
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the excess of covered loss retained.

No definition available.

Name:	fnhc_ExcessOfCoveredLossRetained
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The change in prepaid reinsurance premiums recorded for total insured value on the balance sheet, which is needed to adjust net income to arrive at net cash flows provided by or used in operations.

No definition available.

Name:	fnhc_IncreaseDecreaseInPrepaidReinsurancePremiumsForTotalInsuredValue
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the maximum retention of losses incurred.

No definition available.

Name:	fnhc_MaximumRetentionOfLossesIncurred
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The maximum coverage per incident provided by the insurance arrangement.

No definition available.

Name:	fnhc_MaximumSingleEventCoverage
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Refers to the number of quota share treaties.

No definition available.

Name:	fnhc_NumberOfQuotaShareTreaties
Namespace Prefix:	fnhc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of types of reinsurance structures.

No definition available.

Name:	fnhc_NumberOfTypesOfReinsuranceStructures
Namespace Prefix:	fnhc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of covered loss retained.

No definition available.

Name:	fnhc_PercentageOfCoveredLossRetained
Namespace Prefix:	fnhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Refers to percentage of FHCF coverage to total coverage.

No definition available.

Name:	fnhc_PercentageOfFhcfCoverageToTotalCoverage
Namespace Prefix:	fnhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of Florida coverage to total coverage.

No definition available.

Name:	fnhc_PercentageOfFloridaCoverageToTotalCoverage
Namespace Prefix:	fnhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Refers to percentage of quota share reinsurance treaty.

No definition available.

Name:	fnhc_PercentageOfQuotaShareReinsuranceTreaty
Namespace Prefix:	fnhc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Refers to the period of quota share reinsurance treaty.

No definition available.

Name:	fnhc_PeriodOfQuotaShareReinsuranceTreaty
Namespace Prefix:	fnhc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The unexpired portion of premiums ceded on policies in force as of the balance sheet date projected.

No definition available.

Name:	fnhc_PrepaidReinsurancePremiumsProjected
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The estimated cost for excess of loss reinsurance products.

No definition available.

Name:	fnhc_ReinsurancePremiumPayable
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the amount of a trust agreement funded for potential loss exposure.

No definition available.

Name:	fnhc_TrustAgreementForLossExposure
Namespace Prefix:	fnhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of estimated liability as of the balance sheet date for the specific conflagration, earthquake, windstorm, explosion, or similar event.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437

Name:	us-gaap_LiabilityForCatastropheClaimsCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_LiabilityForCatastropheClaimsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The unexpired portion of premiums ceded on policies in force as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Prepaid Reinsurance Premiums

-URI http://asc.fasb.org/extlink&oid=6521719

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 340

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6485982&loc=d3e22818-158507

Name:	us-gaap_PrepaidReinsurancePremiums
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_ReinsuranceDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Percentage of risk reinsured on insurance products per entity policy.

No definition available.

Name:	us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_StatementGeographicalAxis=stpr_FL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=fnhc_HurricaneSeason20142015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementGeographicalAxis=stpr_LA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=fnhc_HurricaneSeason20152016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ReinsurancePolicyTypeAxis=fnhc_QuotaShareOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ReinsurancePolicyTypeAxis=fnhc_QuotaShareTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: