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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