Name:	fnhc_CarryforwardPeriodForStatutoryUnassignedSurplusIncludedInConsiderationOfDividendToBePaid
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Data Type:	xbrli:durationItemType
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Notice for Commissioner of Insurance, Period for Extraordinary Dividend or Other Extraordinary Distribution to Shareholders

No definition available.

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Period Type:	duration

Number of business days prior to dividend payment.

No definition available.

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

Percentage of Initial Minimum Surplus beyond Capital Stock Required to Declare and Pay Dividends

No definition available.

Name:	fnhc_PercentageOfInitialMinimumSurplusBeyondCapitalStockRequiredToDeclareAndPayDividends
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Data Type:	dtr-types:percentItemType
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Period Type:	duration

This line item represents the percentage of insurers capital surplus considered for dividend distribution.

No definition available.

Name:	fnhc_PercentageOfInsurersCapitalSurplusConsideredForDividendDistribution
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Data Type:	dtr-types:percentItemType
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Period Type:	instant

Percentage of Insurer's Paid-in-Capital and Surplus Minimum to Bypass Initial Minimum Surplus Restriction

No definition available.

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Percentage of minimum statutory capital surplus after the dividend or distribution.

No definition available.

Name:	fnhc_PercentageOfMinimumStatutoryCapitalSurplusAfterDividendOrDistribution
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Data Type:	dtr-types:percentItemType
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Period Type:	instant

Percentage of statutory unassigned surplus as of preceding year included in consideration of dividend to be paid by the Company's insurance companies to their parent company, without prior regulatory approval.

No definition available.

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Data Type:	dtr-types:percentItemType
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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_StatutoryAccountingPracticesLineItems
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The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(23)(c))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators.