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Income Taxes (Details 2) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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| Deferred tax assets: | ||
| Bad debts | $ 2,372us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses | $ 2,754us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses |
| Deferred loan fees | 73nwin_DeferredTaxAssetsTaxDeferredLoanFees | 96nwin_DeferredTaxAssetsTaxDeferredLoanFees |
| Deferred compensation | 484us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 483us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Unrealized depreciation on securities available-for-sale, net | 0us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross | 1,620us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross |
| Net operating loss, state | 557us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 642us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Tax credits | 85us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | 78us-gaap_DeferredTaxAssetsTaxCreditCarryforwards |
| Nonaccrual loan interest income | 62nwin_DeferredTaxAssetsNonaccrualLoanInterestIncome | 87nwin_DeferredTaxAssetsNonaccrualLoanInterestIncome |
| Restricted stock awards | 43nwin_DeferredTaxAssetsRestrictedStockAward | 35nwin_DeferredTaxAssetsRestrictedStockAward |
| REO writedowns | 24nwin_DeferredTaxAssetsRealEstateOwnedWritedowns | 25nwin_DeferredTaxAssetsRealEstateOwnedWritedowns |
| Unqualified deferred compensation plan | 63nwin_DeferredTaxAssetsUnqualifiedDcp | 60nwin_DeferredTaxAssetsUnqualifiedDcp |
| Post retirement benefit | 52us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits | 52us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits |
| Other-than-temporary impairment | 92nwin_DeferredTaxAssetsOtherThanTemporaryImpairment | 92nwin_DeferredTaxAssetsOtherThanTemporaryImpairment |
| Accrued vacation | 98us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | 111us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |
| Impairment on land | 71us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses | 75us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses |
| Purchase accounting | 47nwin_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPurchaseAccounting | 0nwin_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPurchaseAccounting |
| Other | 1us-gaap_DeferredTaxAssetsOther | 19us-gaap_DeferredTaxAssetsOther |
| Total deferred tax assets | 4,124us-gaap_DeferredTaxAssetsGross | 6,229us-gaap_DeferredTaxAssetsGross |
| Deferred tax liabilities: | ||
| Depreciation | (1,034)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (1,232)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |
| Prepaids | (337)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses | (270)us-gaap_DeferredTaxLiabilitiesPrepaidExpenses |
| Mortgage servicing rights | (79)us-gaap_DeferredTaxLiabilitiesMortgageServicingRights | (105)us-gaap_DeferredTaxLiabilitiesMortgageServicingRights |
| Deferred stock dividends | (109)nwin_DeferredTaxLiabilitiesDeferredStockDividends | (112)nwin_DeferredTaxLiabilitiesDeferredStockDividends |
| Unrealized appreciation on securities available-for-sale, net | (826)us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities | 0us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities |
| Post retirement unrealized gain | (23)nwin_DeferredTaxLiabilitiesPostRetirementUnrealizedGain | (42)nwin_DeferredTaxLiabilitiesPostRetirementUnrealizedGain |
| Other | (105)us-gaap_DeferredTaxLiabilitiesOther | (83)us-gaap_DeferredTaxLiabilitiesOther |
| Total deferred tax liabilities | (2,513)us-gaap_DeferredIncomeTaxLiabilities | (1,844)us-gaap_DeferredIncomeTaxLiabilities |
| Valuation allowance | (257)us-gaap_DeferredTaxAssetsValuationAllowance | (288)us-gaap_DeferredTaxAssetsValuationAllowance |
| Net deferred tax asset | $ 1,354us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 4,097us-gaap_DeferredTaxAssetsLiabilitiesNet |
| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from Nonaccrual loan interest income. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to other than temporary impairment. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to Real Estate Owned (REO) writedowns. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to restricted stock awards. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated Purchase accounting. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deferred loan fees. No definition available.
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to Unqualified DCP. No definition available.
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- Definition
Amount of deferred tax liability attributable to deferred stock dividends. No definition available.
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- Definition
Amount of deferred tax liability attributable to post retirement unrealized gain. No definition available.
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated impairment losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. No definition available.
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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