XML 49 R39.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Goodwill, Other Intangible Assets, and Acquisition Related Accounting (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | $ 2,792 |  | $ 2,792
Pool Of Purchased Loans [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | $ 178 |  |  |
Fixed Assets Valuations [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | 109 |  |  |
Accrued WithDrawal Liability [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill, Purchase Accounting Adjustments | $ 162 |  |  |
First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 2,000 |  |
Amortization of Intangible Assets |  | 6 | $ 6 |
First Federal Acquisition [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | 1,100 |  |
Accretion Expense |  | $ 73 | 102 |
First Federal Acquisition [Member] | Loans Receivable [Member] | Home Equity Line of Credit [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Amortization Of Discounts And Premiums Term |  | 55 months |  |
First Federal Acquisition [Member] | During 2017 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | $ 88 |  |
First Federal Acquisition [Member] | During 2018 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 147 |  |
First Federal Acquisition [Member] | Through 2022 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year |  | 48 |  |
Core Deposits [Member] | First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross |  | $ 93 |  |
Finite-Lived Intangible Asset, Useful Life |  | 7 years 10 months 24 days |  |
Liberty Savings [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | $ 804 |  |
Liberty Savings [Member] | Certificates of Deposit [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | $ 124 |  |
Accretion Amortization Of Discounts And Premiums Term |  | 17 months |  |
Amortization Expense |  | $ 0 | 44 |
Liberty Savings [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion (Amortization) of Discounts and Premiums, Investments |  | $ 1,200 |  |
Accretion Amortization Of Discounts And Premiums Term |  | 44 months |  |
Accretion Expense |  | $ 152 | $ 163 |
Liberty Savings [Member] | During 2017 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 139 |  |
Liberty Savings [Member] | During 2018 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 278 |  |
Liberty Savings [Member] | During 2019 [Member] | Loans Receivable [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Accretion Expense |  | 46 |  |
Liberty Savings [Member] | First Federal Acquisition [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Goodwill |  | 2,800 |  |
Liberty Savings [Member] | Core Deposits [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Finite-Lived Core Deposits, Gross |  | $ 471 |  |
Finite-Lived Intangible Asset, Useful Life |  | 8 years 2 months 12 days |  |
Liberty Savings [Member] | Core Deposits [Member] | During 2017 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets |  | $ 29 |  |
Liberty Savings [Member] | Core Deposits [Member] | Through Third Quarter 2023 [Member] |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |
Amortization of Intangible Assets |  | $ 327 |  |

X
- Definition Accretion amortization of discounts and premiums term. + References No definition available. + Details
Name: | nwin_AccretionAmortizationOfDiscountsAndPremiumsTerm
Namespace Prefix: | nwin_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6394232&loc=d3e17558-110866 + Details
Name: | us-gaap_AccretionExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_AdjustmentForAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_FiniteLivedCoreDepositsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References No definition available. + Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | nwin_GoodwillValuationAdjustmentsAxis=nwin_PoolOfPurchasedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nwin_GoodwillValuationAdjustmentsAxis=nwin_FixedAssetsValuationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nwin_GoodwillValuationAdjustmentsAxis=nwin_AccruedWithdrawalLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=nwin_FirstFederalAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_LoansReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=nwin_DuringTwothousandSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=nwin_DuringTwoThousandEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=nwin_ThroughTwoThousandTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CoreDepositsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=nwin_LibertySavingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseAxis=us-gaap_CertificatesOfDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=nwin_During2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentRedemptionPeriodAxis=nwin_ThroughThirdQuarter2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |