XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 3 - Loans - Analysis of the Credit Risk Profile of Each Loan Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Loans | $ 1,449,950 | $ 972,974 | $ 1,466,595
Current period gross write-offs, total | 2,490 | 414 | 4,034
Real Estate 1 [Member] | Construction and Land Development [Member] |  |  |
Loans, current year | 256 |  | 4,445
Loans, one year before | 1,119 |  | 5,401
Loans, two years before | 2,809 |  | 2,421
Loans, three years before | 2,138 |  | 5,829
Loans, four years before | 4,666 |  | 4,424
Loans, prior | 7,881 |  | 5,451
Loans, revolving | 62,727 |  | 56,509
Loans | 81,596 | 53,364 | 84,480
Current period gross write-offs, current year | 0 |  | 0
Current period gross write-offs. one year before | 0 |  | 0
Current period gross write-offs, two years before | 0 |  | 0
Current period gross write-offs, three years before | 0 |  | 0
Current period gross write-offs, four years before | 0 |  | 0
Current period gross write-offs, prior | 22 |  | 4
Current period gross write-offs, revolving | 0 |  | 0
Current period gross write-offs, total | 22 | 4 | 4
Real Estate 1 [Member] | Construction and Land Development [Member] | Pass [Member] |  |  |
Loans, current year | 256 |  | 4,419
Loans, one year before | 1,093 |  | 5,401
Loans, two years before | 2,809 |  | 2,421
Loans, three years before | 2,138 |  | 5,811
Loans, four years before | 4,666 |  | 4,424
Loans, prior | 7,832 |  | 5,419
Loans, revolving | 62,727 |  | 56,509
Loans | 81,521 |  | 84,404
Real Estate 1 [Member] | Construction and Land Development [Member] | Special Mention [Member] |  |  |
Loans, current year | 0 |  | 26
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 0 |  | 26
Real Estate 1 [Member] | Construction and Land Development [Member] | Substandard [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 26 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 18
Loans, four years before | 0 |  | 0
Loans, prior | 49 |  | 32
Loans, revolving | 0 |  | 0
Loans | 75 |  | 50
Real Estate 1 [Member] | Construction and Land Development [Member] | Doubtful [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 0 |  | 0
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] |  |  |
Loans, current year | 7,150 |  | 32,729
Loans, one year before | 30,945 |  | 69,916
Loans, two years before | 68,683 |  | 113,787
Loans, three years before | 110,276 |  | 99,787
Loans, four years before | 98,923 |  | 49,250
Loans, prior | 159,576 |  | 116,958
Loans, revolving | 73,949 |  | 64,740
Loans | 549,502 | 347,014 | 547,167
Current period gross write-offs, current year | 0 |  | 20
Current period gross write-offs. one year before | 0 |  | 0
Current period gross write-offs, two years before | 0 |  | 0
Current period gross write-offs, three years before | 0 |  | 0
Current period gross write-offs, four years before | 0 |  | 0
Current period gross write-offs, prior | 3 |  | 18
Current period gross write-offs, revolving | 0 |  | 0
Current period gross write-offs, total | 3 | 10 | 38
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Pass [Member] |  |  |
Loans, current year | 7,150 |  | 32,609
Loans, one year before | 30,825 |  | 69,884
Loans, two years before | 68,652 |  | 113,535
Loans, three years before | 110,030 |  | 99,470
Loans, four years before | 98,561 |  | 49,250
Loans, prior | 157,308 |  | 115,032
Loans, revolving | 73,949 |  | 64,740
Loans | 546,475 |  | 544,520
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Special Mention [Member] |  |  |
Loans, current year | 0 |  | 120
Loans, one year before | 120 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 304 |  | 83
Loans, revolving | 0 |  | 0
Loans | 424 |  | 203
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Substandard [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 32
Loans, two years before | 31 |  | 252
Loans, three years before | 246 |  | 317
Loans, four years before | 362 |  |
Loans, prior | 1,964 |  | 1,843
Loans, revolving | 0 |  | 0
Loans | 2,603 |  | 2,444
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | Doubtful [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 0 |  | 0
Real Estate 1 [Member] | Other Real Estate Loans [Member] |  |  |
Loans, current year | 12,581 |  | 65,276
Loans, one year before | 62,257 |  | 83,725
Loans, two years before | 82,556 |  | 142,077
Loans, three years before | 135,595 |  | 120,012
Loans, four years before | 117,099 |  | 48,238
Loans, prior | 229,074 |  | 197,303
Loans, revolving | 26,520 |  | 15,531
Loans | 665,682 | 445,085 | 672,162
Current period gross write-offs, current year | 0 |  | 0
Current period gross write-offs. one year before | 0 |  | 0
Current period gross write-offs, two years before | 0 |  | 0
Current period gross write-offs, three years before | 0 |  | 0
Current period gross write-offs, four years before | 0 |  | 0
Current period gross write-offs, prior | 0 |  | 0
Current period gross write-offs, revolving | 0 |  | 0
Current period gross write-offs, total | 0 | (0) | 0
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Pass [Member] |  |  |
Loans, current year | 12,581 |  | 64,958
Loans, one year before | 61,941 |  | 83,725
Loans, two years before | 82,556 |  | 142,077
Loans, three years before | 135,595 |  | 120,012
Loans, four years before | 117,099 |  | 48,238
Loans, prior | 224,733 |  | 192,869
Loans, revolving | 26,520 |  | 15,531
Loans | 661,025 |  | 667,410
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Special Mention [Member] |  |  |
Loans, current year | 0 |  | 318
Loans, one year before | 316 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 3,993 |  | 4,072
Loans, revolving | 0 |  | 0
Loans | 4,309 |  | 4,390
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Substandard [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 348 |  | 362
Loans, revolving | 0 |  | 0
Loans | 348 |  | 362
Real Estate 1 [Member] | Other Real Estate Loans [Member] | Doubtful [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 0 |  | 0
Commercial and Industrial Loans [Member] |  |  |
Loans, current year | 712 |  | 25,315
Loans, one year before | 21,331 |  | 25,572
Loans, two years before | 21,918 |  | 26,729
Loans, three years before | 22,510 |  | 23,733
Loans, four years before | 20,431 |  | 3,583
Loans, prior | 13,868 |  | 13,774
Loans, revolving | 31,626 |  | 22,627
Loans | 132,396 | 113,562 | 141,333
Current period gross write-offs, current year | 0 |  | 110
Current period gross write-offs. one year before | 618 |  | 1,275
Current period gross write-offs, two years before | 170 |  | 772
Current period gross write-offs, three years before | 1,314 |  | 1,519
Current period gross write-offs, four years before | 239 |  | 20
Current period gross write-offs, prior | 2 |  | 3
Current period gross write-offs, revolving | 0 |  | 0
Current period gross write-offs, total | 2,343 | 317 | 3,699
Commercial and Industrial Loans [Member] | Pass [Member] |  |  |
Loans, current year | 712 |  | 24,270
Loans, one year before | 20,908 |  | 24,835
Loans, two years before | 21,114 |  | 21,819
Loans, three years before | 18,881 |  | 23,086
Loans, four years before | 20,126 |  | 3,583
Loans, prior | 12,912 |  | 12,815
Loans, revolving | 31,626 |  | 22,627
Loans | 126,279 |  | 133,035
Commercial and Industrial Loans [Member] | Special Mention [Member] |  |  |
Loans, current year | 0 |  | 430
Loans, one year before | 423 |  | 0
Loans, two years before | 0 |  | 1,211
Loans, three years before | 1,179 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 518 |  | 513
Loans, revolving | 0 |  | 0
Loans | 2,120 |  | 2,154
Commercial and Industrial Loans [Member] | Substandard [Member] |  |  |
Loans, current year | 0 |  | 615
Loans, one year before | 0 |  | 737
Loans, two years before | 804 |  | 3,699
Loans, three years before | 2,450 |  | 647
Loans, four years before | 305 |  |
Loans, prior | 438 |  | 446
Loans, revolving | 0 |  | 0
Loans | 3,997 |  | 6,144
Commercial and Industrial Loans [Member] | Doubtful [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 0 |  | 0
Consumer and Other Loans [Member] |  |  |
Loans, current year | 1,763 |  | 5,129
Loans, one year before | 3,281 |  | 1,967
Loans, two years before | 1,665 |  | 1,437
Loans, three years before | 1,200 |  | 130
Loans, four years before | 180 |  | 1,306
Loans, prior | 3,728 |  | 2,567
Loans, revolving | 8,957 |  | 8,917
Loans | 20,774 | 13,949 | 21,453
Current period gross write-offs, current year | 0 |  | 249
Current period gross write-offs. one year before | 0 |  | 29
Current period gross write-offs, two years before | 0 |  | 9
Current period gross write-offs, three years before | 0 |  | 3
Current period gross write-offs, four years before | 0 |  | 1
Current period gross write-offs, prior | 0 |  | 2
Current period gross write-offs, revolving | 122 |  | 0
Current period gross write-offs, total | 122 | $ 83 | 293
Consumer and Other Loans [Member] | Pass [Member] |  |  |
Loans, current year | 1,763 |  | 5,129
Loans, one year before | 3,281 |  | 1,697
Loans, two years before | 1,295 |  | 1,437
Loans, three years before | 1,200 |  | 130
Loans, four years before | 180 |  | 1,306
Loans, prior | 3,727 |  | 2,566
Loans, revolving | 8,957 |  | 8,917
Loans | 20,403 |  | 21,182
Consumer and Other Loans [Member] | Special Mention [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 270
Loans, two years before | 370 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | 370 |  | 270
Consumer and Other Loans [Member] | Substandard [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 1 |  | 1
Loans, revolving | 0 |  | 0
Loans | 1 |  | 1
Consumer and Other Loans [Member] | Doubtful [Member] |  |  |
Loans, current year | 0 |  | 0
Loans, one year before | 0 |  | 0
Loans, two years before | 0 |  | 0
Loans, three years before | 0 |  | 0
Loans, four years before | 0 |  | 0
Loans, prior | 0 |  | 0
Loans, revolving | 0 |  | 0
Loans | $ 0 |  | $ 0

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + 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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + 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 -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + 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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477011/948-310-45-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-13 Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7A Reference 6: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (1) -Publisher SEC Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph a -Publisher SEC Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fxnc_RealEstate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fxnc_ConstructionAndLandDevelopmentMember
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_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fxnc_SecuredByMultifamilyResidentialPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fxnc_OtherRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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