|
Loans Receivable (Details 2) (USD $)
In Thousands, unless otherwise specified
|
Mar. 31, 2015
|
Dec. 31, 2014
|
| Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
$ 213,688us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
|
$ 211,162us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
|
| Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
2,195us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
|
2,289us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
|
| Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
60,900us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
|
58,682us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
|
| Residential Real Estate [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
185,363us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
|
189,529us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
|
| Consumer Loan [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
346us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
|
357us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
|
| Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
28,045us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
|
26,134us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
|
| Modest Risk [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
| Modest Risk [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
| Modest Risk [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
4,109us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
4,920us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
| Modest Risk [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_ModestRiskMember
|
| Acceptable Risk [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
173,738us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
170,423us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
| Acceptable Risk [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
2,050us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
2,071us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
| Acceptable Risk [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
43,421us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
41,197us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
| Acceptable Risk [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
28,045us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
26,134us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= nwin_AcceptableRiskMember
|
| Pass [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
30,182us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
29,678us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
| Pass [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
45us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
115us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
| Pass [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
11,652us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
10,893us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
| Pass [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
|
| Special Mention [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
4,607us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
4,649us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
| Special Mention [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
| Special Mention [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
1,403us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
1,343us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
| Special Mention [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
|
| Substandard [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
5,161us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
6,412us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
| Substandard [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
100us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
103us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
| Substandard [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
315us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
329us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
| Substandard [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
|
| Doubtful [Member] | Commercial Real Estate [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
| Doubtful [Member] | Commercial Participations Purchased [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= nwin_CommercialParticipationsPurchasedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
| Doubtful [Member] | Commercial Loan [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
| Doubtful [Member] | Government [Member] | Corporate Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
0us-gaap_NotesReceivableNet
/ us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis
= us-gaap_GovernmentMember
/ nwin_CreditExposureAxis
= nwin_CorporateCreditExposureMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
|
| Performing Financing Receivable [Member] | Residential Real Estate [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
177,999us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
|
185,996us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
|
| Performing Financing Receivable [Member] | Consumer Loan [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
346us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
|
357us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PerformingFinancingReceivableMember
|
| Nonperforming Financing Receivable [Member] | Residential Real Estate [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
7,364us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
|
3,533us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
|
| Nonperforming Financing Receivable [Member] | Consumer Loan [Member] | Consumer Credit Exposure [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Financing Receivable |
$ 0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
|
$ 0us-gaap_NotesReceivableNet
/ nwin_CreditExposureAxis
= nwin_ConsumerCreditExposureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_NonperformingFinancingReceivableMember
|