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Acquisition Activities - Intangible Assets (Details) - USD ($) $ in Millions | Oct. 01, 2022 | Sep. 01, 2022
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Rock Canyon Bank |  |
Acquisition Activities |  |
Acquired through acquisition |  | $ 52.9
Rock Canyon Bank | Core Deposits |  |
Acquisition Activities |  |
Acquired through acquisition |  | $ 13.3
Amortization period |  | 10 years
Rock Canyon Bank | Small Business Administration ("SBA") servicing rights |  |
Acquisition Activities |  |
Acquired through acquisition |  | $ 3.1
Bank of Jackson Hole |  |
Acquisition Activities |  |
Acquired through acquisition | $ 111.3 |
Amount transferred from available-for-sale securities to held-to-maturity | $ 75.3 |
Amortization period | 10 years |
Bank of Jackson Hole | Core Deposits |  |
Acquisition Activities |  |
Acquired through acquisition | $ 29.4 |
Bank of Jackson Hole | Wealth management intangibles |  |
Acquisition Activities |  |
Acquired through acquisition | $ 1.3 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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