XML 129 R33.htm IDEA: XBRL DOCUMENT
v3.20.1

Deposits (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Deposits [Abstract] |
Schedule of Maturities of Time Deposits |
﻿ |  |
﻿ |  |
﻿2020 | $ | 258,645
﻿2021 |  | 38,394
﻿2022 |  | 26,580
﻿2023 |  | 24,162
﻿2024 |  | 12,937
﻿ | $ | 360,718
﻿

X
- Definition Tabular disclosure of maturities of time deposits. + References No definition available. + Details
Name: | nwfl_ScheduleOfMaturitiesOfTimeDepositsTableTextBlock
Namespace Prefix: | nwfl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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