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Capital Ratios and Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2024
Equity [Abstract] |
Summary of compliance with regulatory capital requirements | The following tables set forth these requirements and our ratios as of:
| June 30, 2024
| Actual |  | Minimum Capital Requirement |  | Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | $ | 174,164 |  |  | 11.90 | % |  | $ | 102,453 |  |  | 7.00 | % |  | $ | 95,135 |  |  | 6.50 | %
Consolidated | 181,602 |  |  | 12.37 | % |  | 102,821 |  |  | 7.00 | % |  | N/A |  | N/A
Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 174,164 |  |  | 11.90 | % |  | 124,407 |  |  | 8.50 | % |  | 117,089 |  |  | 8.00 | %
Consolidated | 181,602 |  |  | 12.37 | % |  | 124,854 |  |  | 8.50 | % |  | N/A |  | N/A
Total capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 187,710 |  |  | 12.83 | % |  | 153,679 |  |  | 10.50 | % |  | 146,361 |  |  | 10.00 | %
Consolidated | 224,527 |  |  | 15.29 | % |  | 154,232 |  |  | 10.50 | % |  | N/A |  | N/A
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 174,164 |  |  | 8.49 | % |  | 82,024 |  |  | 4.00 | % |  | 102,530 |  |  | 5.00 | %
Consolidated | 181,602 |  |  | 8.83 | % |  | 82,245 |  |  | 4.00 | % |  | N/A |  | N/A
| December 31, 2023
| Actual |  | Minimum Capital Requirement |  | Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | $ | 178,316 |  |  | 12.48 | % |  | $ | 100,043 |  |  | 7.00 | % |  | $ | 92,897 |  |  | 6.50 | %
Consolidated | 180,014 |  |  | 12.54 | % |  | 100,449 |  |  | 7.00 | % |  | N/A |  | N/A
Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 178,316 |  |  | 12.48 | % |  | 121,481 |  |  | 8.50 | % |  | 114,335 |  |  | 8.00 | %
Consolidated | 180,014 |  |  | 12.54 | % |  | 121,973 |  |  | 8.50 | % |  | N/A |  | N/A
Total capital to risk weighted assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 191,739 |  |  | 13.42 | % |  | 150,065 |  |  | 10.50 | % |  | 142,919 |  |  | 10.00 | %
Consolidated | 222,772 |  |  | 15.52 | % |  | 150,673 |  |  | 10.50 | % |  | N/A |  | N/A
Tier 1 capital to average assets |  |  |  |  |  |  |  |  |  |  |
Isabella Bank | 178,316 |  |  | 8.71 | % |  | 81,935 |  |  | 4.00 | % |  | 102,419 |  |  | 5.00 | %
Consolidated | 180,014 |  |  | 8.76 | % |  | 82,154 |  |  | 4.00 | % |  | N/A |  | N/A
Summary of the components of accumulated other comprehensive income | The following table summarizes the changes in AOCI by component for the:
| Three Months Ended June 30
| 2024 |  | 2023
| Unrealized Gains (Losses) on AFS Securities |  |  |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  |  |  | Defined Benefit Pension Plan |  | Total
Balance, April 1 | $ | (27,493) |  |  |  |  | $ | (697) |  |  | $ | (28,190) |  |  | $ | (28,948) |  |  |  |  | $ | (1,366) |  |  | $ | (30,314) |
OCI before reclassifications | 703 |  |  |  |  | — |  |  | 703 |  |  | (7,638) |  |  |  |  | — |  |  | (7,638) |
Amounts reclassified from AOCI | — |  |  |  |  | — |  |  | — |  |  | (66) |  |  |  |  | — |  |  | (66) |
Subtotal | 703 |  |  |  |  | — |  |  | 703 |  |  | (7,704) |  |  |  |  | — |  |  | (7,704) |
Tax effect | (149) |  |  |  |  | — |  |  | (149) |  |  | 1,601 |  |  |  |  | — |  |  | 1,601 |
OCI, net of tax | 554 |  |  |  |  | — |  |  | 554 |  |  | (6,103) |  |  |  |  | — |  |  | (6,103) |
Balance, June 30 | $ | (26,939) |  |  |  |  | $ | (697) |  |  | $ | (27,636) |  |  | $ | (35,051) |  |  |  |  | $ | (1,366) |  |  | $ | (36,417) |
| Six Months Ended June 30
| 2024 |  | 2023
| Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total
Balance, January 1 | $ | (25,199) |  |  | $ | (697) |  |  | $ | (25,896) |  |  | $ | (35,828) |  |  | $ | (1,366) |  |  | $ | (37,194) |
OCI before reclassifications | (2,223) |  |  | — |  |  | (2,223) |  |  | 972 |  |  | — |  |  | 972 |
Amounts reclassified from AOCI | — |  |  | — |  |  | — |  |  | (67) |  |  | — |  |  | (67) |
Subtotal | (2,223) |  |  | — |  |  | (2,223) |  |  | 905 |  |  | — |  |  | 905 |
Tax effect | 483 |  |  | — |  |  | 483 |  |  | (128) |  |  | — |  |  | (128) |
OCI, net of tax | (1,740) |  |  | — |  |  | (1,740) |  |  | 777 |  |  | — |  |  | 777 |
Balance, June 30 | $ | (26,939) |  |  | $ | (697) |  |  | $ | (27,636) |  |  | $ | (35,051) |  |  | $ | (1,366) |  |  | $ | (36,417) |
A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended June 30
| 2024 |  | 2023
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | (5) |  |  | $ | 708 |  |  | $ | 703 |  |  | $ | (79) |  |  | $ | (7,559) |  |  | $ | (7,638) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | (66) |  |  | (66) |
Net unrealized gains (losses) | (5) |  |  | 708 |  |  | 703 |  |  | (79) |  |  | (7,625) |  |  | (7,704) |
Tax effect | — |  |  | (149) |  |  | (149) |  |  | — |  |  | 1,601 |  |  | 1,601 |
Unrealized gains (losses), net of tax | $ | (5) |  |  | $ | 559 |  |  | $ | 554 |  |  | $ | (79) |  |  | $ | (6,024) |  |  | $ | (6,103) |
| Six Months Ended June 30
| 2024 |  | 2023
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | 77 |  |  | $ | (2,300) |  |  | $ | (2,223) |  |  | $ | 295 |  |  | $ | 677 |  |  | $ | 972 |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | (67) |  |  | (67) |
Net unrealized gains (losses) | 77 |  |  | (2,300) |  |  | (2,223) |  |  | 295 |  |  | 610 |  |  | 905 |
Tax effect | — |  |  | 483 |  |  | 483 |  |  | — |  |  | (128) |  |  | (128) |
Unrealized gains (losses), net of tax | $ | 77 |  |  | $ | (1,817) |  |  | $ | (1,740) |  |  | $ | 295 |  |  | $ | 482 |  |  | $ | 777 |

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