XML 72 R59.htm IDEA: XBRL DOCUMENT
v3.25.3

Allowance for Credit Losses - Loans - Commercial and commercial real estate loan portfolios (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Total loans |  | $ 1,055,683 |  | $ 1,055,683 |  | $ 1,067,949
Current period gross charge-offs, Total | $ 2,800 | 7 | $ 204 | 3,088 | $ 620 |
Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Total loans |  | 236,352 |  | 236,352 |  | 233,882
Current period gross charge-offs, Total |  |  |  | 2,762 |  |
Commercial Portfolio Segment |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 59,156 |  | 59,156 |  | 110,142
2024/2023 |  | 101,497 |  | 101,497 |  | 137,086
2023/2022 |  | 131,869 |  | 131,869 |  | 101,631
2022/2021 |  | 85,558 |  | 85,558 |  | 113,330
2021/2020 |  | 109,619 |  | 109,619 |  | 65,020
Prior |  | 217,188 |  | 217,188 |  | 192,032
Revolving Loans Amortized Cost Basis |  | 58,475 |  | 58,475 |  | 60,995
Revolving Loans Converted to Term |  | 8,135 |  | 8,135 |  | 1,992
Total loans |  | 771,497 |  | 771,497 |  | 782,228
Current period gross charge-offs, 2023/2022 |  |  |  |  |  | 427
Current period gross charge-offs, 2022/2021 |  |  |  | 200 |  |
Current period gross charge-offs, Prior |  |  |  | 2,762 |  | 1,571
Current period gross charge-offs, Total |  |  |  | 2,962 |  | 1,998
Commercial Portfolio Segment | Commercial real estate (owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 7,082 |  | 7,082 |  | 10,294
2024/2023 |  | 10,387 |  | 10,387 |  | 17,016
2023/2022 |  | 16,677 |  | 16,677 |  | 6,648
2022/2021 |  | 6,275 |  | 6,275 |  | 14,355
2021/2020 |  | 13,326 |  | 13,326 |  | 10,476
Prior |  | 34,128 |  | 34,128 |  | 26,984
Revolving Loans Amortized Cost Basis |  | 606 |  | 606 |  | 324
Revolving Loans Converted to Term |  |  |  |  |  | 856
Total loans |  | 88,481 |  | 88,481 |  | 86,953
Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 13,466 |  | 13,466 |  | 16,714
2024/2023 |  | 11,049 |  | 11,049 |  | 19,837
2023/2022 |  | 15,373 |  | 15,373 |  | 21,386
2022/2021 |  | 14,135 |  | 14,135 |  | 9,150
2021/2020 |  | 7,507 |  | 7,507 |  | 4,568
Prior |  | 20,258 |  | 20,258 |  | 19,969
Revolving Loans Amortized Cost Basis |  | 50,438 |  | 50,438 |  | 55,627
Revolving Loans Converted to Term |  | 8,135 |  | 8,135 |  |
Total loans |  | 140,361 |  | 140,361 |  | 147,251
Current period gross charge-offs, 2023/2022 |  |  |  |  |  | 427
Current period gross charge-offs, 2022/2021 |  |  |  | 200 |  |
Current period gross charge-offs, Total |  |  | $ 132 | 200 | $ 424 | 427
Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 17,126 |  | 17,126 |  | 29,349
2024/2023 |  | 24,593 |  | 24,593 |  | 38,912
2023/2022 |  | 37,473 |  | 37,473 |  | 21,240
2022/2021 |  | 19,518 |  | 19,518 |  | 31,934
2021/2020 |  | 31,017 |  | 31,017 |  | 21,322
Prior |  | 50,791 |  | 50,791 |  | 38,047
Revolving Loans Amortized Cost Basis |  | 31 |  | 31 |  | 32
Revolving Loans Converted to Term |  |  |  |  |  | 942
Total loans |  | 180,549 |  | 180,549 |  | 181,778
Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 136 |  | 136 |  | 25,984
2024/2023 |  | 28,047 |  | 28,047 |  | 28,807
2023/2022 |  | 31,859 |  | 31,859 |  | 16,423
2022/2021 |  | 11,636 |  | 11,636 |  | 16,816
2021/2020 |  | 16,396 |  | 16,396 |  | 12,428
Prior |  | 37,205 |  | 37,205 |  | 31,431
Revolving Loans Amortized Cost Basis |  | 475 |  | 475 |  | 475
Total loans |  | 125,754 |  | 125,754 |  | 132,364
Commercial Portfolio Segment | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 21,346 |  | 21,346 |  | 27,801
2024/2023 |  | 27,421 |  | 27,421 |  | 32,514
2023/2022 |  | 30,487 |  | 30,487 |  | 35,934
2022/2021 |  | 33,994 |  | 33,994 |  | 41,075
2021/2020 |  | 41,373 |  | 41,373 |  | 16,226
Prior |  | 74,806 |  | 74,806 |  | 75,601
Revolving Loans Amortized Cost Basis |  | 6,925 |  | 6,925 |  | 4,537
Revolving Loans Converted to Term |  |  |  |  |  | 194
Total loans |  | 236,352 |  | 236,352 |  | 233,882
Current period gross charge-offs, Prior |  |  |  | 2,762 |  | 1,571
Current period gross charge-offs, Total |  |  |  | 2,762 |  | 1,571
Pass | Commercial Portfolio Segment |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 59,156 |  | 59,156 |  | 110,142
2024/2023 |  | 101,497 |  | 101,497 |  | 136,606
2023/2022 |  | 131,263 |  | 131,263 |  | 100,348
2022/2021 |  | 83,257 |  | 83,257 |  | 107,698
2021/2020 |  | 103,979 |  | 103,979 |  | 64,105
Prior |  | 199,091 |  | 199,091 |  | 175,405
Revolving Loans Amortized Cost Basis |  | 56,004 |  | 56,004 |  | 59,823
Revolving Loans Converted to Term |  | 8,110 |  | 8,110 |  | 1,992
Total loans |  | 742,357 |  | 742,357 |  | 756,119
Pass | Commercial Portfolio Segment | Commercial real estate (owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 7,082 |  | 7,082 |  | 10,294
2024/2023 |  | 10,387 |  | 10,387 |  | 17,016
2023/2022 |  | 16,677 |  | 16,677 |  | 6,648
2022/2021 |  | 6,275 |  | 6,275 |  | 10,675
2021/2020 |  | 9,648 |  | 9,648 |  | 10,476
Prior |  | 33,063 |  | 33,063 |  | 26,393
Revolving Loans Amortized Cost Basis |  | 457 |  | 457 |  | 324
Revolving Loans Converted to Term |  |  |  |  |  | 856
Total loans |  | 83,589 |  | 83,589 |  | 82,682
Pass | Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 13,466 |  | 13,466 |  | 16,714
2024/2023 |  | 11,049 |  | 11,049 |  | 19,357
2023/2022 |  | 15,373 |  | 15,373 |  | 20,977
2022/2021 |  | 13,878 |  | 13,878 |  | 7,397
2021/2020 |  | 5,744 |  | 5,744 |  | 4,568
Prior |  | 19,369 |  | 19,369 |  | 19,280
Revolving Loans Amortized Cost Basis |  | 48,116 |  | 48,116 |  | 54,455
Revolving Loans Converted to Term |  | 8,110 |  | 8,110 |  |
Total loans |  | 135,105 |  | 135,105 |  | 142,748
Pass | Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 17,126 |  | 17,126 |  | 29,349
2024/2023 |  | 24,593 |  | 24,593 |  | 38,912
2023/2022 |  | 36,867 |  | 36,867 |  | 20,935
2022/2021 |  | 19,518 |  | 19,518 |  | 31,934
2021/2020 |  | 31,017 |  | 31,017 |  | 21,322
Prior |  | 50,791 |  | 50,791 |  | 38,047
Revolving Loans Amortized Cost Basis |  | 31 |  | 31 |  | 32
Revolving Loans Converted to Term |  |  |  |  |  | 942
Total loans |  | 179,943 |  | 179,943 |  | 181,473
Pass | Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 136 |  | 136 |  | 25,984
2024/2023 |  | 28,047 |  | 28,047 |  | 28,807
2023/2022 |  | 31,859 |  | 31,859 |  | 16,423
2022/2021 |  | 11,636 |  | 11,636 |  | 16,816
2021/2020 |  | 16,396 |  | 16,396 |  | 11,513
Prior |  | 34,987 |  | 34,987 |  | 30,066
Revolving Loans Amortized Cost Basis |  | 475 |  | 475 |  | 475
Total loans |  | 123,536 |  | 123,536 |  | 130,084
Pass | Commercial Portfolio Segment | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2025/2024 |  | 21,346 |  | 21,346 |  | 27,801
2024/2023 |  | 27,421 |  | 27,421 |  | 32,514
2023/2022 |  | 30,487 |  | 30,487 |  | 35,365
2022/2021 |  | 31,950 |  | 31,950 |  | 40,876
2021/2020 |  | 41,174 |  | 41,174 |  | 16,226
Prior |  | 60,881 |  | 60,881 |  | 61,619
Revolving Loans Amortized Cost Basis |  | 6,925 |  | 6,925 |  | 4,537
Revolving Loans Converted to Term |  |  |  |  |  | 194
Total loans |  | 220,184 |  | 220,184 |  | 219,132
Special Mention | Commercial Portfolio Segment |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2023/2022 |  |  |  |  |  | 305
2022/2021 |  | 1,857 |  | 1,857 |  |
Prior |  | 6,873 |  | 6,873 |  | 3,488
Revolving Loans Amortized Cost Basis |  | 1,332 |  | 1,332 |  |
Total loans |  | 10,062 |  | 10,062 |  | 3,793
Special Mention | Commercial Portfolio Segment | Commercial real estate (owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Prior |  | 534 |  | 534 |  |
Revolving Loans Amortized Cost Basis |  | 149 |  | 149 |  |
Total loans |  | 683 |  | 683 |  |
Special Mention | Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Revolving Loans Amortized Cost Basis |  | 1,183 |  | 1,183 |  |
Total loans |  | 1,183 |  | 1,183 |  |
Special Mention | Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2023/2022 |  |  |  |  |  | 305
Total loans |  |  |  |  |  | 305
Special Mention | Commercial Portfolio Segment | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022/2021 |  | 1,857 |  | 1,857 |  |
Prior |  | 6,339 |  | 6,339 |  | 3,488
Total loans |  | 8,196 |  | 8,196 |  | 3,488
Substandard | Commercial Portfolio Segment |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2024/2023 |  |  |  |  |  | 480
2023/2022 |  | 606 |  | 606 |  | 978
2022/2021 |  | 444 |  | 444 |  | 5,632
2021/2020 |  | 5,640 |  | 5,640 |  | 915
Prior |  | 10,826 |  | 10,826 |  | 13,139
Revolving Loans Amortized Cost Basis |  | 1,139 |  | 1,139 |  | 1,172
Revolving Loans Converted to Term |  | 25 |  | 25 |  |
Total loans |  | 18,680 |  | 18,680 |  | 22,316
Substandard | Commercial Portfolio Segment | Commercial real estate (owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2022/2021 |  |  |  |  |  | 3,680
2021/2020 |  | 3,678 |  | 3,678 |  |
Prior |  | 531 |  | 531 |  | 591
Total loans |  | 4,209 |  | 4,209 |  | 4,271
Substandard | Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2024/2023 |  |  |  |  |  | 480
2023/2022 |  |  |  |  |  | 409
2022/2021 |  | 257 |  | 257 |  | 1,753
2021/2020 |  | 1,763 |  | 1,763 |  |
Prior |  | 491 |  | 491 |  | 689
Revolving Loans Amortized Cost Basis |  | 1,139 |  | 1,139 |  | 1,172
Revolving Loans Converted to Term |  | 25 |  | 25 |  |
Total loans |  | 3,675 |  | 3,675 |  | 4,503
Substandard | Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2023/2022 |  | 606 |  | 606 |  |
Total loans |  | 606 |  | 606 |  |
Substandard | Commercial Portfolio Segment | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2021/2020 |  |  |  |  |  | 915
Prior |  | 2,218 |  | 2,218 |  | 1,365
Total loans |  | 2,218 |  | 2,218 |  | 2,280
Substandard | Commercial Portfolio Segment | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
2023/2022 |  |  |  |  |  | 569
2022/2021 |  | 187 |  | 187 |  | 199
2021/2020 |  | 199 |  | 199 |  |
Prior |  | 7,586 |  | 7,586 |  | 10,494
Total loans |  | 7,972 |  | 7,972 |  | $ 11,262
Doubtful | Commercial Portfolio Segment |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Prior |  | 398 |  | 398 |  |
Total loans |  | 398 |  | 398 |  |
Doubtful | Commercial Portfolio Segment | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |  |
Prior |  | 398 |  | 398 |  |
Total loans |  | $ 398 |  | $ 398 |  |

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + 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://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_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes 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 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: 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_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, 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/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_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan. + 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 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, 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/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_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, 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/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_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-15 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-15 Reference 12: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 18: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 19: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-15 Reference 20: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-15 Reference 21: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-15 Reference 22: 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 23: 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 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=asrv_CommercialLoansSecuredByNonOwnerOccupiedMultiFamilyRealEstateMember
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: |