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Fair Value - Carrying Amounts and Estimated Fair Values (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | --- | ---
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | $ 321,616 | $ 338,570 | $ 336,007
Mortgage servicing rights | 3,281 | 3,583 | 3,639
Financial liabilities |  |  |
Local certificates of deposit | 1,111,739 | 1,070,247 | 1,049,629
Total deposits | 2,578,080 | 2,599,662 | 2,499,862
Carrying value |  |  |
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | 377,522 | 385,235 | 389,987
Total loans | 2,222,977 | 2,105,424 | 2,037,488
Mortgage servicing rights | 2,019 | 2,177 | 2,313
Financial liabilities |  |  |
Local certificates of deposit | 369,948 | 293,466 | 332,390
National certificates of deposit | 741,791 | 776,781 | 717,239
Total deposits | 1,111,739 | 1,070,247 | 1,049,629
Repurchase agreements | 56,502 | 49,576 | 48,401
Federal Home Loan Bank advances | 174,118 | 20,076 | 66,080
Total borrowed funds | 230,620 | 69,652 | 114,481
Carrying value | Commercial | Real estate |  |  |
Financial assets |  |  |
Total loans | 738,022 | 699,537 | 688,497
Carrying value | Commercial | Construction |  |  |
Financial assets |  |  |
Total loans | 97,804 | 86,695 | 62,625
Carrying value | Commercial | Other |  |  |
Financial assets |  |  |
Total loans | 477,978 | 443,944 | 438,945
Carrying value | Municipal |  |  |
Financial assets |  |  |
Total loans | 61,925 | 51,089 | 57,853
Carrying value | Residential | Construction |  |  |
Financial assets |  |  |
Total loans | 34,987 | 31,740 | 30,203
Carrying value | Residential | Term |  |  |
Financial assets |  |  |
Total loans | 680,446 | 669,864 | 640,296
Carrying value | Home Equity |  |  |
Financial assets |  |  |
Total loans | 111,484 | 103,400 | 99,031
Carrying value | Consumer |  |  |
Financial assets |  |  |
Total loans | 20,331 | 19,155 | 20,038
Total Fair Value |  |  |
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | 321,616 | 338,570 | 336,007
Total loans | 2,094,743 | 1,964,228 | 1,913,868
Mortgage servicing rights | 3,281 | 3,583 | 3,639
Financial liabilities |  |  |
Local certificates of deposit | 350,698 | 362,555 | 311,328
National certificates of deposit | 750,751 | 699,919 | 719,323
Total deposits | 1,101,449 | 1,062,474 | 1,030,651
Repurchase agreements | 56,372 | 49,462 | 48,293
Federal Home Loan Bank advances | 123,851 | 20,074 | 66,050
Total borrowed funds | 180,223 | 69,536 | 114,343
Total Fair Value | Commercial | Real estate |  |  |
Financial assets |  |  |
Total loans | 700,230 | 658,732 | 653,180
Total Fair Value | Commercial | Construction |  |  |
Financial assets |  |  |
Total loans | 92,796 | 81,638 | 59,413
Total Fair Value | Commercial | Other |  |  |
Financial assets |  |  |
Total loans | 468,464 | 431,067 | 427,185
Total Fair Value | Municipal |  |  |
Financial assets |  |  |
Total loans | 59,216 | 46,806 | 53,169
Total Fair Value | Residential | Construction |  |  |
Financial assets |  |  |
Total loans | 34,556 | 31,131 | 30,089
Total Fair Value | Residential | Term |  |  |
Financial assets |  |  |
Total loans | 610,008 | 595,033 | 572,873
Total Fair Value | Home Equity |  |  |
Financial assets |  |  |
Total loans | 111,424 | 102,858 | 99,975
Total Fair Value | Consumer |  |  |
Financial assets |  |  |
Total loans | 18,049 | 16,963 | 17,984
Total Fair Value | Level 1 |  |  |
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | 0 | 0 | 0
Total loans | 0 | 0 | 0
Mortgage servicing rights | 0 | 0 | 0
Financial liabilities |  |  |
Local certificates of deposit | 0 | 0 | 0
National certificates of deposit | 0 | 0 | 0
Total deposits | 0 | 0 | 0
Repurchase agreements | 0 | 0 | 0
Federal Home Loan Bank advances | 0 | 0 | 0
Total borrowed funds | 0 | 0 | 0
Total Fair Value | Level 1 | Commercial | Real estate |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Commercial | Construction |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Commercial | Other |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Municipal |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Residential | Construction |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Residential | Term |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Home Equity |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 1 | Consumer |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 |  |  |
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | 321,616 | 338,570 | 336,007
Total loans | 0 | 285 | 215
Mortgage servicing rights | 3,281 | 3,583 | 3,639
Financial liabilities |  |  |
Local certificates of deposit | 350,698 | 362,555 | 311,328
National certificates of deposit | 750,751 | 699,919 | 719,323
Total deposits | 1,101,449 | 1,062,474 | 1,030,651
Repurchase agreements | 56,372 | 49,462 | 48,293
Federal Home Loan Bank advances | 123,851 | 20,074 | 66,050
Total borrowed funds | 180,223 | 69,536 | 114,343
Total Fair Value | Level 2 | Commercial | Real estate |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 | Commercial | Construction |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 | Commercial | Other |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 215
Total Fair Value | Level 2 | Municipal |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 | Residential | Construction |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 | Residential | Term |  |  |
Financial assets |  |  |
Total loans | 0 | 285 | 0
Total Fair Value | Level 2 | Home Equity |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 2 | Consumer |  |  |
Financial assets |  |  |
Total loans | 0 | 0 | 0
Total Fair Value | Level 3 |  |  |
Financial assets |  |  |
Securities to be held to maturity (net of allowance for credit losses) | 0 | 0 | 0
Total loans | 2,094,743 | 1,963,943 | 1,913,653
Mortgage servicing rights | 0 | 0 | 0
Financial liabilities |  |  |
Local certificates of deposit | 0 | 0 | 0
National certificates of deposit | 0 | 0 | 0
Total deposits | 0 | 0 | 0
Repurchase agreements | 0 | 0 | 0
Federal Home Loan Bank advances | 0 | 0 | 0
Total borrowed funds | 0 | 0 | 0
Total Fair Value | Level 3 | Commercial | Real estate |  |  |
Financial assets |  |  |
Total loans | 700,230 | 658,732 | 653,180
Total Fair Value | Level 3 | Commercial | Construction |  |  |
Financial assets |  |  |
Total loans | 92,796 | 81,638 | 59,413
Total Fair Value | Level 3 | Commercial | Other |  |  |
Financial assets |  |  |
Total loans | 468,464 | 431,067 | 426,970
Total Fair Value | Level 3 | Municipal |  |  |
Financial assets |  |  |
Total loans | 59,216 | 46,806 | 53,169
Total Fair Value | Level 3 | Residential | Construction |  |  |
Financial assets |  |  |
Total loans | 34,556 | 31,131 | 30,089
Total Fair Value | Level 3 | Residential | Term |  |  |
Financial assets |  |  |
Total loans | 610,008 | 594,748 | 572,873
Total Fair Value | Level 3 | Home Equity |  |  |
Financial assets |  |  |
Total loans | 111,424 | 102,858 | 99,975
Total Fair Value | Level 3 | Consumer |  |  |
Financial assets |  |  |
Total loans | $ 18,049 | $ 16,963 | $ 17,984

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