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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Value of Initial Fixed | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Investment Based on: | ​ | ​ | ​ | ​
​ | ​ | Summary | ​ | ​ | ​ | Average Summary | ​ | Average | ​ | ​ | ​ | Peer Group | ​ | ​ | ​ | ​
​ | ​ | Compensation | ​ | Compensation | ​ | Compensation on | ​ | Compensation | ​ | Total | ​ | Total | ​ | ​ | ​ | ​
​ | ​ | on Table Total | ​ | Actually | ​ | Table Total for | ​ | Actually Paid to | ​ | Shareholder | ​ | Shareholder | ​ | ​ | ​ | Adjusted
​ | ​ | for PEO (1) | ​ | Paid to PEO (2) | ​ | Non-PEO NEOs (3) | ​ | Non-PEO NEOs (4) | ​ | Return (5) | ​ | Return (5) | ​ | Net Income | ​ | Net Income (6)
Year | ​ | ($) | ​ | ($) | ​ | ($) | ​ | ($) | ​ | (%) | ​ | (%) | ​ | ($) | ​ | ($)
2023 | ​ | 2,294,391 | ​ | 2,356,115 | ​ | 794,666 | ​ | 769,297 | ​ | 19.90 | ​ | (3.35) | ​ | 91,729,000 | ​ | 96,997,000
2022 | ​ | 1,702,083 | ​ | 2,006,937 | ​ | 693,748 | ​ | 802,770 | ​ | 22.84 | ​ | (2.48) | ​ | 67,405,000 | ​ | 71,814,000
2021 | ​ | 1,717,080 | ​ | 2,057,620 | ​ | 701,022 | ​ | 861,926 | ​ | (4.93) | ​ | 24.06 | ​ | 20,044,000 | ​ | 39,800,000
2020 | ​ | 1,330,313 | ​ | 981,528 | ​ | 562,218 | ​ | 397,204 | ​ | (24.70) | ​ | (10.32) | ​ | 27,825,000 | ​ | 30,800,000
| (1) | PEO for 2020, 2021, 2022, and 2023 was James Eccher.
​
| (2) | This column represents the “compensation actually paid” to our PEO for each year, determined by starting with the amount set forth in the Summary Compensation Table (“SCT”) in the column entitled “Total Compensation” for the applicable year and adjusting that amount as follows:
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | PEO
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
​ | ​ | ($) | ​ | ($) | ​ | ($) | ​ | ($)
Summary Compensation Table Total Compensation | ​ | 2,294,391 | ​ | 1,702,083 | ​ | 1,717,080 | ​ | 1,330,313
Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year | ​ | (862,809) | ​ | (501,517) | ​ | (463,986) | ​ | (288,110)
Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year | ​ | 924,533 | ​ | 806,371 | ​ | 804,526 | ​ | (60,675)
Compensation Actually Paid | ​ | 2,356,115 | ​ | 2,006,937 | ​ | 2,057,620 | ​ | 981,528
​ ​
| (3) | Non-PEO NEOs for 2020, 2021, 2022, and 2023 were Bradley Adams, Gary Collins, Donald Pilmer, and Richard Gartelmann.
​
| (4) | This column represents the average “compensation actually paid” to our non-PEO NEOs for each year, determined by starting with the amount set forth in the SCT in the column entitled “Total Compensation” for the applicable year (and taking the average of those amounts for the non-PEO NEOs) and adjusting that amount as follows:
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Non-PEO NEOs
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
​ | ​ | ($) | ​ | ($) | ​ | ($) | ​ | ($)
Summary Compensation Table Total Compensation | ​ | 794,666 | ​ | 693,748 | ​ | 701,022 | ​ | 562,218
Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year | ​ | (215,659) | ​ | (171,857) | ​ | (163,566) | ​ | (108,958)
Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year | ​ | 190,291 | ​ | 280,879 | ​ | 324,470 | ​ | (56,057)
Compensation Actually Paid | ​ | 769,297 | ​ | 802,770 | ​ | 861,926 | ​ | 397,204
​ ​
| (5) | The Peer Group TSR disclosed in this table utilizes the KBW NASDAQ Bank Index (“KBW Bank Index”), which we also use in the stock performance chart required by Item 201(e) of Regulation S-K included in our Annual Report Form 10-K for the year ended December 31, 2023. The two columns assume $100 was invested for the period starting December 31, 2019 and through the end of the listed year in each of the Company and in the KBW Bank Index, respectively. All dollar values assume reinvestment of pre-tax dividends paid by companies, where applicable, included in the KBW Bank Index. Historical stock performance is not necessarily indicative of future stock performance.
​
| (6) | Adjusted Net Income is a non-GAAP measure we use to compare periods by excluding material transactions that are not considered core to our business or may not reflect the effects of operations. We determined Adjusted Net Income to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and Non-PEO NEOs in 2023. The Adjusted Net Income used for compensation differs from that disclosed in the Form 10-K. See our reconciliation to GAAP Net Income on page 50.
Company Selected Measure Name | Adjusted Net Income |  |  |
Named Executive Officers, Footnote |
| (1) | PEO for 2020, 2021, 2022, and 2023 was James Eccher.
​
| (3) | Non-PEO NEOs for 2020, 2021, 2022, and 2023 were Bradley Adams, Gary Collins, Donald Pilmer, and Richard Gartelmann.
Peer Group Issuers, Footnote | ​
| (5) | The Peer Group TSR disclosed in this table utilizes the KBW NASDAQ Bank Index (“KBW Bank Index”), which we also use in the stock performance chart required by Item 201(e) of Regulation S-K included in our Annual Report Form 10-K for the year ended December 31, 2023. The two columns assume $100 was invested for the period starting December 31, 2019 and through the end of the listed year in each of the Company and in the KBW Bank Index, respectively. All dollar values assume reinvestment of pre-tax dividends paid by companies, where applicable, included in the KBW Bank Index. Historical stock performance is not necessarily indicative of future stock performance.
PEO Total Compensation Amount | $ 2,294,391 | $ 1,702,083 | $ 1,717,080 | $ 1,330,313
PEO Actually Paid Compensation Amount | $ 2,356,115 | 2,006,937 | 2,057,620 | 981,528
Adjustment To PEO Compensation, Footnote | ​
| (2) | This column represents the “compensation actually paid” to our PEO for each year, determined by starting with the amount set forth in the Summary Compensation Table (“SCT”) in the column entitled “Total Compensation” for the applicable year and adjusting that amount as follows:
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | PEO
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
​ | ​ | ($) | ​ | ($) | ​ | ($) | ​ | ($)
Summary Compensation Table Total Compensation | ​ | 2,294,391 | ​ | 1,702,083 | ​ | 1,717,080 | ​ | 1,330,313
Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year | ​ | (862,809) | ​ | (501,517) | ​ | (463,986) | ​ | (288,110)
Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year | ​ | 924,533 | ​ | 806,371 | ​ | 804,526 | ​ | (60,675)
Compensation Actually Paid | ​ | 2,356,115 | ​ | 2,006,937 | ​ | 2,057,620 | ​ | 981,528
​ |  |  |
Non-PEO NEO Average Total Compensation Amount | $ 794,666 | 693,748 | 701,022 | 562,218
Non-PEO NEO Average Compensation Actually Paid Amount | $ 769,297 | 802,770 | 861,926 | 397,204
Adjustment to Non-PEO NEO Compensation Footnote | ​
| (4) | This column represents the average “compensation actually paid” to our non-PEO NEOs for each year, determined by starting with the amount set forth in the SCT in the column entitled “Total Compensation” for the applicable year (and taking the average of those amounts for the non-PEO NEOs) and adjusting that amount as follows:
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Non-PEO NEOs
​ | ​ | 2023 | ​ | 2022 | ​ | 2021 | ​ | 2020
​ | ​ | ($) | ​ | ($) | ​ | ($) | ​ | ($)
Summary Compensation Table Total Compensation | ​ | 794,666 | ​ | 693,748 | ​ | 701,022 | ​ | 562,218
Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year | ​ | (215,659) | ​ | (171,857) | ​ | (163,566) | ​ | (108,958)
Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year | ​ | 190,291 | ​ | 280,879 | ​ | 324,470 | ​ | (56,057)
Compensation Actually Paid | ​ | 769,297 | ​ | 802,770 | ​ | 861,926 | ​ | 397,204
​ |  |  |
Tabular List, Table | We consider the following to be the most important financial performance measures used to link compensation actually paid to our NEOs, for 2023, to Company performance. The role of each of these performance measures on our NEOs’ compensation is discussed in the Compensation Discussion and Analysis above. The measures in this table are not ranked.
​
Performance Measures
Adjusted Net Income
Asset/Credit Quality
Adjusted Efficiency Ratio
Total Shareholder Return Amount | $ 19.90 | 22.84 | (4.93) | (24.70)
Peer Group Total Shareholder Return Amount | (3.35) | (2.48) | 24.06 | (10.32)
Net Income (Loss) | $ 91,729,000 | $ 67,405,000 | $ 20,044,000 | $ 27,825,000
Company Selected Measure Amount | 96,997,000 | 71,814,000 | 39,800,000 | 30,800,000
PEO Name | James Eccher |  |  |
Measure:: 1 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted Net Income |  |  |
Non-GAAP Measure Description | ​
| (6) | Adjusted Net Income is a non-GAAP measure we use to compare periods by excluding material transactions that are not considered core to our business or may not reflect the effects of operations. We determined Adjusted Net Income to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and Non-PEO NEOs in 2023. The Adjusted Net Income used for compensation differs from that disclosed in the Form 10-K. See our reconciliation to GAAP Net Income on page 50.
Measure:: 2 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Asset/Credit Quality |  |  |
Measure:: 3 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted Efficiency Ratio |  |  |
PEO | Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ (862,809) | $ (501,517) | $ (463,986) | $ (288,110)
PEO | Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 924,533 | 806,371 | 804,526 | (60,675)
Non-PEO NEO | Less Grant Date Fair Value of RSU Awards in Covered Fiscal Year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (215,659) | (171,857) | (163,566) | (108,958)
Non-PEO NEO | Add Change in Fair Value of Outstanding and Unvested RSU Awards Granted in Prior Years and Covered Fiscal Year |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 190,291 | $ 280,879 | $ 324,470 | $ (56,057)

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