XML 82 R63.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 4 - Loans Receivable - Accretable Yield (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
2018, accretable yield collected |  | $ 1,824
2019, accretable yield collected | $ 1,820 |
First Personal Financial Corporation [Member] |  |
2018, accretable yield collected |  | 586
2019, accretable yield collected | 534 |
2021 | 779 |
Total | 2,018 |
2021, to be collected | 779 |
2023, to be collected | 461 |
First Federal Savings and Loan [Member] |  |
2018, accretable yield collected |  | 22
2019, accretable yield collected | 0 |
2021 | 243 |
Total | 592 |
2021, to be collected | 243 |
2023, to be collected | 106 |
Liberty Savings Bank [Member] |  |
2018, accretable yield collected |  | 42
2019, accretable yield collected | 0 |
2021 | 536 |
Total | 1,426 |
2021, to be collected | 536 |
2023, to be collected | 355 |
AJS Bancorp, Inc [Member] |  |
2018, accretable yield collected |  | $ 1,174
2019, accretable yield collected | 1,286 |
Financial Asset Acquired with Credit Deterioration [Member] | First Personal Financial Corporation [Member] |  |
2018, accretable yield collected | 147 |
2019, accretable yield collected | 99 |
2021 | 21 |
Total | $ 21 |

X
- Definition The amount of accretable yield collected during the period from acquired financing receivables in the current fiscal year. + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableYieldCollectedCurrentYear
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of accretable yield, or income expected to be collected. + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableYieldToBeCollected
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of accretable yield, or income expected to be collected in next fiscal year four. + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableYieldToBeCollectedYearFour
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of accretable yield, or income expected to be collected in next fiscal year three. + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableYieldToBeCollectedYearThree
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of accretable yield, or income expected to be collected in next fiscal year two + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableYieldToBeCollectedYearTwo
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of accretable yield collected in the previous year from acquired financing reciveables. + References No definition available. + Details
Name: | nwin_FinancingReceivablesAcquiredAccretableyieldAmountCollectedPreviousYear
Namespace Prefix: | nwin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

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

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |