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Acquisition Activities - Summary of PCD loans purchased (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Oct. 01, 2022 | Sep. 01, 2022 | Dec. 31, 2022
Business Acquisition [Line Items] |  |  |
PCD allowance for credit loss at acquisition |  |  | $ (6,238)
Commercial Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
PCD allowance for credit loss at acquisition |  |  | (2,408)
Commercial Real Estate Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
PCD allowance for credit loss at acquisition |  |  | (3,559)
Residential Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
PCD allowance for credit loss at acquisition |  |  | (270)
Consumer Loan [Member] |  |  |
Business Acquisition [Line Items] |  |  |
PCD allowance for credit loss at acquisition |  |  | $ (1)
Rock Canyon Bank |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance |  | $ 13,145 |
PCD allowance for credit loss at acquisition |  | (2,474) |
(Discount) premium on acquired loans |  | (773) |
Loans previously charged-off by RCB |  | (2,054) |
Purchase price of PCD loans |  | 7,844 |
Rock Canyon Bank | Commercial Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance |  | 12,079 |
PCD allowance for credit loss at acquisition |  | (2,257) |
(Discount) premium on acquired loans |  | (787) |
Loans previously charged-off by RCB |  | (2,051) |
Purchase price of PCD loans |  | 6,984 |
Rock Canyon Bank | Commercial Real Estate Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance |  | 220 |
PCD allowance for credit loss at acquisition |  | (2) |
(Discount) premium on acquired loans |  | 19 |
Purchase price of PCD loans |  | 237 |
Rock Canyon Bank | Residential Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance |  | 843 |
PCD allowance for credit loss at acquisition |  | (215) |
(Discount) premium on acquired loans |  | (5) |
Purchase price of PCD loans |  | 623 |
Rock Canyon Bank | Consumer Loan [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance |  | 3 |
Loans previously charged-off by RCB |  | $ (3) |
Bank of Jackson Hole |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance | $ 13,902 |  |
PCD allowance for credit loss at acquisition | (3,764) |  |
(Discount) premium on acquired loans | (578) |  |
Purchase price of PCD loans | 9,560 |  |
Bank of Jackson Hole | Commercial Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance | 5,061 |  |
PCD allowance for credit loss at acquisition | (151) |  |
(Discount) premium on acquired loans | (336) |  |
Purchase price of PCD loans | 4,574 |  |
Bank of Jackson Hole | Commercial Real Estate Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance | 8,353 |  |
PCD allowance for credit loss at acquisition | (3,557) |  |
(Discount) premium on acquired loans | (226) |  |
Purchase price of PCD loans | 4,570 |  |
Bank of Jackson Hole | Residential Portfolio Segment [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance | 476 |  |
PCD allowance for credit loss at acquisition | (55) |  |
(Discount) premium on acquired loans | (16) |  |
Purchase price of PCD loans | 405 |  |
Bank of Jackson Hole | Consumer Loan [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Unpaid principal balance | 12 |  |
PCD allowance for credit loss at acquisition | (1) |  |
Purchase price of PCD loans | $ 11 |  |

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