XML 66 R57.htm IDEA: XBRL DOCUMENT
v3.23.1

Loans Receivable and Allowance for Loan Losses (Summary of Recorded Investment by Internal Risk Rating Systems) (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | $ 1,536,037 | $ 1,474,424 |
Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 56,028 |  |
2022 | 208,661 |  |
2021 | 156,749 |  |
2020 | 113,519 |  |
2019 | 102,947 |  |
Prior | 276,923 |  |
Revolving Loans Amortized Cost Basis | 63,861 |  |
Total | 978,688 |  |
Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | $ 942,993
Pass [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 56,028 |  |
2022 | 208,105 |  |
2021 | 156,007 |  |
2020 | 110,789 |  |
2019 | 102,431 |  |
Prior | 273,211 |  |
Revolving Loans Amortized Cost Basis | 63,381 |  |
Total | 969,952 |  |
Pass [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 934,256
Special Mention [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2021 | 247 |  |
2020 | 185 |  |
2019 | 107 |  |
Prior | 1,432 |  |
Revolving Loans Amortized Cost Basis | 155 |  |
Total | 2,126 |  |
Special Mention [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 2,187
Substandard [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2022 | 556 |  |
2021 | 495 |  |
2020 | 2,545 |  |
2019 | 409 |  |
Prior | 2,280 |  |
Revolving Loans Amortized Cost Basis | 325 |  |
Total | 6,610 |  |
Substandard [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 6,550
Commercial Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 668,386 | 651,544 |
Commercial Real Estate Loans [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 25,867 |  |
2022 | 133,953 |  |
2021 | 116,497 |  |
2020 | 76,838 |  |
2019 | 76,905 |  |
Prior | 220,653 |  |
Revolving Loans Amortized Cost Basis | 17,673 |  |
Total | 668,386 |  |
Current period gross charge-offs, 2019 | 112 |  |
Current period gross charge-offs, Total | 112 |  |
Commercial Real Estate Loans [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 651,544
Commercial Real Estate Loans [Member] | Pass [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 25,867 |  |
2022 | 133,953 |  |
2021 | 116,254 |  |
2020 | 75,366 |  |
2019 | 76,615 |  |
Prior | 217,831 |  |
Revolving Loans Amortized Cost Basis | 17,673 |  |
Total | 663,559 |  |
Commercial Real Estate Loans [Member] | Pass [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 646,775
Commercial Real Estate Loans [Member] | Special Mention [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2021 | 243 |  |
Prior | 819 |  |
Total | 1,062 |  |
Commercial Real Estate Loans [Member] | Special Mention [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 1,079
Commercial Real Estate Loans [Member] | Substandard [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2020 | 1,472 |  |
2019 | 290 |  |
Prior | 2,003 |  |
Total | 3,765 |  |
Commercial Real Estate Loans [Member] | Substandard [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 3,690
Agricultural Real Estate Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 68,381 | 68,915 |
Agricultural Real Estate Loans [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 1,033 |  |
2022 | 13,957 |  |
2021 | 5,607 |  |
2020 | 10,251 |  |
2019 | 8,579 |  |
Prior | 28,049 |  |
Revolving Loans Amortized Cost Basis | 905 |  |
Total | 68,381 |  |
Agricultural Real Estate Loans [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 68,915
Agricultural Real Estate Loans [Member] | Pass [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 1,033 |  |
2022 | 13,433 |  |
2021 | 5,607 |  |
2020 | 9,187 |  |
2019 | 8,579 |  |
Prior | 27,429 |  |
Revolving Loans Amortized Cost Basis | 580 |  |
Total | 65,848 |  |
Agricultural Real Estate Loans [Member] | Pass [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 66,444
Agricultural Real Estate Loans [Member] | Special Mention [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Prior | 432 |  |
Total | 432 |  |
Agricultural Real Estate Loans [Member] | Special Mention [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 368
Agricultural Real Estate Loans [Member] | Substandard [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2022 | 524 |  |
2020 | 1,064 |  |
Prior | 188 |  |
Revolving Loans Amortized Cost Basis | 325 |  |
Total | 2,101 |  |
Agricultural Real Estate Loans [Member] | Substandard [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 2,103
Commercial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 207,888 | 187,257 |
Commercial Loans [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 28,394 |  |
2022 | 54,623 |  |
2021 | 30,781 |  |
2020 | 22,910 |  |
2019 | 14,153 |  |
Prior | 23,273 |  |
Revolving Loans Amortized Cost Basis | 33,754 |  |
Total | 207,888 |  |
Current period gross charge-offs, 2020 | 50 |  |
Current period gross charge-offs, Total | 50 |  |
Commercial Loans [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 187,257
Commercial Loans [Member] | Pass [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 28,394 |  |
2022 | 54,591 |  |
2021 | 30,757 |  |
2020 | 22,901 |  |
2019 | 14,153 |  |
Prior | 23,003 |  |
Revolving Loans Amortized Cost Basis | 33,754 |  |
Total | 207,553 |  |
Commercial Loans [Member] | Pass [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 186,966
Commercial Loans [Member] | Special Mention [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Prior | 181 |  |
Total | 181 |  |
Commercial Loans [Member] | Special Mention [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 184
Commercial Loans [Member] | Substandard [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2022 | 32 |  |
2021 | 24 |  |
2020 | 9 |  |
Prior | 89 |  |
Total | 154 |  |
Commercial Loans [Member] | Substandard [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 107
Other Agricultural Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 34,033 | $ 35,277 |
Other Agricultural Loans [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 734 |  |
2022 | 6,128 |  |
2021 | 3,864 |  |
2020 | 3,520 |  |
2019 | 3,310 |  |
Prior | 4,948 |  |
Revolving Loans Amortized Cost Basis | 11,529 |  |
Total | 34,033 |  |
Other Agricultural Loans [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 35,277
Other Agricultural Loans [Member] | Pass [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2023 | 734 |  |
2022 | 6,128 |  |
2021 | 3,389 |  |
2020 | 3,335 |  |
2019 | 3,084 |  |
Prior | 4,948 |  |
Revolving Loans Amortized Cost Basis | 11,374 |  |
Total | 32,992 |  |
Other Agricultural Loans [Member] | Pass [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 34,071
Other Agricultural Loans [Member] | Special Mention [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2021 | 4 |  |
2020 | 185 |  |
2019 | 107 |  |
Revolving Loans Amortized Cost Basis | 155 |  |
Total | 451 |  |
Other Agricultural Loans [Member] | Special Mention [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | 556
Other Agricultural Loans [Member] | Substandard [Member] | Non-Homogenous Pools [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
2021 | 471 |  |
2019 | 119 |  |
Total | $ 590 |  |
Other Agricultural Loans [Member] | Substandard [Member] | Aggregate Pass and Criticized Categories [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total |  |  | $ 650

X
- Definition Financing Receivable, Allowance for Credit Loss, Writeoff + References No definition available. + Details
Name: | nwfl_FinancingReceivableAllowanceForCreditLossWriteoff
Namespace Prefix: | nwfl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff + References No definition available. + Details
Name: | nwfl_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | nwfl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff + References No definition available. + Details
Name: | nwfl_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | nwfl_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph (a) + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_StatementScenarioAxis=nwfl_NonHomogenousPoolsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=nwfl_AggregatePassAndCriticizedCategoriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=nwfl_AgriculturalRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=nwfl_OtherAgriculturalLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |