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Borrowed Funds (Details 2) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Ending balance | $ 17,525us-gaap_SecuritiesSoldUnderAgreementsToRepurchase | $ 14,031us-gaap_SecuritiesSoldUnderAgreementsToRepurchase |
| Average balance during the year | 18,029us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding | 18,016us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding |
| Maximum month-end balance during the year | 25,540us-gaap_FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd | 21,652us-gaap_FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd |
| Securities underlying the agreements at year end, Carrying value | 103,754nwin_SecuritiesSoldUnderAgreementsToRepurchaseOrResellCarryingAmount | 23,729nwin_SecuritiesSoldUnderAgreementsToRepurchaseOrResellCarryingAmount |
| Fair value | $ 103,754nwin_SecuritiesSoldUnderAgreementsToRepurchaseOrResellFairValueDisclosure | $ 23,729nwin_SecuritiesSoldUnderAgreementsToRepurchaseOrResellFairValueDisclosure |
| Average interest rate during the year | 0.37%us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear | 0.38%us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear |
| Average interest rate at year end | 0.35%us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd | 0.38%us-gaap_FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd |
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- Definition
The carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase or resell (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. No definition available.
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- Definition
The fair value as of the balance sheet date of securities that an institution sells and agrees to repurchase or resell (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. No definition available.
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- Definition
The calculated average balance outstanding for the year for all Federal Home Loan Bank advances as of the Balance Sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The calculated weighted average interest rate for Federal Home Loan Bank advances for the period ended as of the Balance Sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The maximum balance outstanding at any month end during the period as of the Balance Sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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