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Goodwill, Other Intangible Assets, and Acquisition Related Accounting (Details Textual) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2015
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Dec. 31, 2014
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| Indefinite-lived Intangible Assets [Line Items] | ||
| Goodwill | $ 1,988us-gaap_Goodwill | $ 1,611us-gaap_Goodwill |
| Amortization of Intangible Assets | 3us-gaap_AmortizationOfIntangibleAssets | |
| Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year | 9us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear | |
| Goodwill, Acquired During Period | 377us-gaap_GoodwillAcquiredDuringPeriod | |
| Goodwill, Impairment Loss | 423us-gaap_GoodwillImpairmentLoss | |
| Certificates of Deposit [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion (Amortization) of Discounts and Premiums, Investments |
276us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments / us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis = us-gaap_CertificatesOfDepositMember |
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| Accretion Amortization Of Discounts And Premiums Term | 17 months | |
| Accretion Expense |
50us-gaap_AccretionExpense / us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis = us-gaap_CertificatesOfDepositMember |
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| Loans Receivable [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion (Amortization) of Discounts and Premiums, Investments |
1,100us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_LoansReceivableMember |
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| Accretion Amortization Of Discounts And Premiums Term | 55 months | |
| Accretion Expense |
70us-gaap_AccretionExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_LoansReceivableMember |
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| Through to 2017 [Member] | Loans Receivable [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion Expense |
200us-gaap_AccretionExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_LoansReceivableMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = nwin_ThroughToTwoThousandSeventeenMember |
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| During 2018 [Member] | Loans Receivable [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion Expense |
167us-gaap_AccretionExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_LoansReceivableMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = nwin_DuringTwoThousandEighteenMember |
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| Remainder of 2015 [Member] | Certificates of Deposit [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion Expense |
76us-gaap_AccretionExpense / us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis = us-gaap_CertificatesOfDepositMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = nwin_RemainderOfTwoThousandFifteenMember |
|
| Remainder of 2015 [Member] | Loans Receivable [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Accretion Expense |
150us-gaap_AccretionExpense / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_LoansReceivableMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = nwin_RemainderOfTwoThousandFifteenMember |
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| Core Deposits [Member] | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Goodwill |
2,000us-gaap_Goodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CoreDepositsMember |
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| Finite-Lived Core Deposits, Gross |
$ 93us-gaap_FiniteLivedCoreDepositsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CoreDepositsMember |
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| Finite-Lived Intangible Asset, Useful Life | 7 years 10 months 24 days |
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- Definition
Accretion amortization of discounts and premiums term. No definition available.
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- Definition
The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Bank deposits belonging to an acquired bank that can be counted on as a stable source of lending funds. These deposits have the following attributes: predictable costs and low sensitivity to interest rates. This intangible asset is usually amortized over its estimated useful life. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. No definition available.
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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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