Acquisition Activities - Accounting for acquired loans (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Sep. 01, 2022
Rock Canyon Bank
Acquisition Activities
Loans, net		$ 535,197
Loans acquired accounted as PCD		13,145
Loans charged off		2,100
Loans previously charged-off		2,054
Rock Canyon Bank \| Receivables Acquired with Deteriorated Credit Quality [Member]
Acquisition Activities
Loans, net		537,700
Loans acquired accounted as PCD		$ 11,100
Loans acquired accounted as PCD percentage		2.10%
Gross contractual amounts receivable		$ 13,800
Loans not expected to be collected		$ 4,500
Bank of Jackson Hole
Acquisition Activities
Loans, net	$ 1,185,699
Loans acquired accounted as PCD	13,902
Bank of Jackson Hole \| Receivables Acquired with Deteriorated Credit Quality [Member]
Acquisition Activities
Loans, net	1,200,000
Loans acquired accounted as PCD	$ 13,900
Loans acquired accounted as PCD percentage	1.10%
Gross contractual amounts receivable	$ 14,000
Loans charged off	500
Loans not expected to be collected	$ 3,800

Percentage of loans acquired in business combination accounted as PCD

No definition available.

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- Definition

Amount of loans previously charged-off attributable to other factors on financing receivable purchased with credit deterioration.

+ References

No definition available.

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- Definition

Amount, after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

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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.

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472

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- Definition

Amount at par value of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 19
-Subparagraph (d)
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