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Note 16 - Fair Value of Financial Instruments - Measurement Inputs and Valuation Techniques (Details) - Valuation, Fair Value of Collateral [Member] - Measurement Input, Discount Rate [Member] $ in Thousands | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Minimum [Member] |  |
Collateral dependent loans, measurement input | 0 | 0
Maximum [Member] |  |
Collateral dependent loans, measurement input | 0.80 | 0.80
Weighted Average [Member] |  |
Collateral dependent loans, measurement input | 0.08 | 0.17
Collateral Pledged [Member] |  |
Loans | $ 1,496 | $ 8,673

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- Definition Value of input used to measure collateral dependent loans. + References No definition available. + Details
Name: | fnwd_CollateralDependentLoanMeasurementInput
Namespace Prefix: | fnwd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_ValuationTechniqueAxis=fnwd_ValuationFairValueOfCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_CollateralAxis=us-gaap_CollateralPledgedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |