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Loans, Primary Segments Portfolio and Accretable Yield for PCI Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | $ 1,737,953 |  | $ 1,737,953 |  | $ 1,441,533
Individually evaluated for impairment | 12,194 |  | 12,194 |  | 15,533
Loans acquired with deteriorated credit quality | 3,434 |  | 3,434 |  | 3,802
Collectively evaluated for impairment | 1,722,325 |  | 1,722,325 |  | 1,422,198
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Allowance for loan losses | 18,291 |  | 18,291 |  | 17,304
Individually evaluated for impairment | 107 | $ 269 | 107 | $ 269 | 121
Allowance for loan losses related to loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 18,184 | 17,065 | 18,184 | 17,065 | 17,183
Loans and Leases Receivable, Net Amount [Abstract] |  |  |  |  |
Net loans | 1,719,662 |  | 1,719,662 |  | 1,424,229
Net loans, individually evaluated for impairment | 12,087 |  | 12,087 |  | 15,412
Net loans, loans acquired with deteriorated credit quality | 3,434 |  | 3,434 |  | 3,802
Net loans, collectively evaluated for impairment | 1,704,141 |  | 1,704,141 |  | 1,405,015
Loans originated |  |  |  |  | 24,300
Outstanding principal balances | 0 |  | 0 |  | 6,800
Maximum amount of loan forgiven by guidance from SBA |  |  | 150 |  |
Changes in the accretable yield for purchased credit-impaired loans [Roll Forward] |  |  |  |  |
Balance at beginning of period | 278 | 584 | 370 | 788 | 788
Acquisition of Midcoast | 0 | 0 | 0 | 0 |
Reclassification of non-accretable discount | 774 | 29 | 1,002 | 29 |
Accretion | (105) | (135) | (425) | (339) |
Balance at end of period | 947 | 478 | 947 | 478 | 370
Loans acquired with specific evidence of deterioration in credit quality [Abstract] |  |  |  |  |
Outstanding balance | 6,207 |  | 6,207 |  | 6,159
Carrying amount | 3,434 |  | $ 3,434 |  | 3,802
Minimum [Member] |  |  |  |  |
Loans and Leases Receivable, Net Amount [Abstract] |  |  |  |  |
Number of days past for loan to be considered impaired, Minimum |  |  | 90 days |  |
First Mortgage [Member] | Minimum [Member] |  |  |  |  |
Loans and Leases Receivable, Net Amount [Abstract] |  |  |  |  |
Period of mortgage on real estate |  |  | 15 years |  |
First Mortgage [Member] | Maximum [Member] |  |  |  |  |
Loans and Leases Receivable, Net Amount [Abstract] |  |  |  |  |
Period of mortgage on real estate |  |  | 30 years |  |
Second Mortgage [Member] | Maximum [Member] |  |  |  |  |
Loans and Leases Receivable, Net Amount [Abstract] |  |  |  |  |
Period of mortgage on real estate |  |  | 15 years |  |
Real Estate Loans [Member] | Residential [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 203,673 |  | $ 203,673 |  | 201,097
Individually evaluated for impairment | 344 |  | 344 |  | 620
Loans acquired with deteriorated credit quality | 9 |  | 9 |  | 14
Collectively evaluated for impairment | 203,320 |  | 203,320 |  | 200,463
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 6 | 16 | 6 | 16 | 12
Collectively evaluated for impairment | 999 | 1,174 | 999 | 1,174 | 1,135
Real Estate Loans [Member] | Commercial [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 857,314 |  | 857,314 |  | 687,338
Individually evaluated for impairment | 5,736 |  | 5,736 |  | 8,381
Loans acquired with deteriorated credit quality | 1,902 |  | 1,902 |  | 2,145
Collectively evaluated for impairment | 849,676 |  | 849,676 |  | 676,812
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 60 | 97 | 60 | 97 | 61
Collectively evaluated for impairment | 9,877 | 7,581 | 9,877 | 7,581 | 8,038
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 317,761 |  | 317,761 |  | 312,011
Individually evaluated for impairment | 5,174 |  | 5,174 |  | 5,355
Loans acquired with deteriorated credit quality | 1,523 |  | 1,523 |  | 1,643
Collectively evaluated for impairment | 311,064 |  | 311,064 |  | 305,013
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 24 | 12 | 24 | 12 | 14
Collectively evaluated for impairment | 4,514 | 4,734 | 4,514 | 4,734 | 4,715
Real Estate Loans [Member] | Construction [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 79,154 |  | 79,154 |  | 55,036
Individually evaluated for impairment | 0 |  | 0 |  | 0
Loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 79,154 |  | 79,154 |  | 55,036
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 678 | 538 | 678 | 538 | 434
Consumer [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 124,375 |  | 124,375 |  | 25,858
Individually evaluated for impairment | 4 |  | 4 |  | 0
Loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 124,371 |  | 124,371 |  | 25,858
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 4 | 0 | 4 | 0 | 0
Collectively evaluated for impairment | 228 | 318 | 228 | 318 | 262
Other Commercial Loans [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 66,241 |  | 66,241 |  | 74,585
Individually evaluated for impairment | 135 |  | 135 |  | 186
Loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 66,106 |  | 66,106 |  | 74,399
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 13 | 35 | 13 | 35 | 34
Collectively evaluated for impairment | 380 | 1,096 | 380 | 1,096 | 989
Other Agricultural Loans [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 29,509 |  | 29,509 |  | 39,852
Individually evaluated for impairment | 801 |  | 801 |  | 991
Loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 28,708 |  | 28,708 |  | 38,861
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 109 | 0 | 109 | 0
Collectively evaluated for impairment | 1,359 | 339 | 1,359 | 339 | 558
State and Political Subdivision Loans [Member] |  |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |  |
Total financing receivables | 59,926 |  | 59,926 |  | 45,756
Individually evaluated for impairment | 0 |  | 0 |  | 0
Loans acquired with deteriorated credit quality | 0 |  | 0 |  | 0
Collectively evaluated for impairment | 59,926 |  | 59,926 |  | 45,756
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |
Individually evaluated for impairment | 0 | 0 | 0 | 0 | 0
Collectively evaluated for impairment | 325 | $ 296 | 325 | $ 296 | $ 281
MidCoast Community Bancorp, Inc [Member] |  |  |  |  |
Loans acquired with specific evidence of deterioration in credit quality [Abstract] |  |  |  |  |
Carrying amount | $ 3,171 |  | $ 3,171 |  |

X
- Definition Amount of reclassified non-accretable discount recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition The number of days past due before a loan is classified as impaired, measured in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=123409700&loc=d3e13503-111538 + Details
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- Definition The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=123409700&loc=d3e13503-111538 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 + Details
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