Operating Segments	12 Months Ended
Operating Segments	Dec. 31, 2023
Segment Reporting [Abstract]
Operating Segments	Operating Segments The Company’s activities are considered to be one reportable segment for financial reporting purposes. The Company is engaged in the business of commercial and retail banking and trust and investment management services with operations throughout central and eastern Iowa, the Minneapolis/St. Paul metropolitan area of Minnesota, southwestern Wisconsin, Naples and Fort Myers Florida, and Denver, Colorado. Substantially all income is derived from a diverse base of commercial, mortgage and retail lending activities, and investments.

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details