XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.19.1

Off-Balance Sheet Financial Instruments and Gurantees (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Mar. 31, 2018
--- | --- | ---
Loss Contingencies [Line Items] |  |
Financial instrument commitments | $ 122,078 | $ 115,846
Commitments to grant loans [Member] |  |
Loss Contingencies [Line Items] |  |
Financial instrument commitments | 40,322 | 46,792
Unfunded commitments under lines of credit [Member] |  |
Loss Contingencies [Line Items] |  |
Financial instrument commitments | 77,573 | 63,135
Standby letters of credit [Member] |  |
Loss Contingencies [Line Items] |  |
Financial instrument commitments | $ 4,183 | $ 5,919

X
- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
Name: | us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_CommitmentsToExtendCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=nwfl_UnfundedCommitmentsUnderLinesOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |