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Business Combinations and Asset Acquisitions - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 01, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Bank of Commerce          
Business Acquisition [Line Items]          
Business Combination, Purchase Price Allocation, Goodwill Amount $ 57,330        
Business Combination, Purchase Price Allocation, Amortizable Intangible Assets 15,932        
Business Combination, net loans acquired 1,084,984        
Acquired PCD loans $ 40,278        
Business Combination, Acquisition Related Costs   $ 568 $ 2,192 $ 4,904 $ 2,702
Umpqua          
Business Acquisition [Line Items]          
Business Combination, Acquisition Related Costs   $ 2,700   $ 9,300