Borrowing Arrangements - Schedule of Borrowings Available to the Company from Institutions (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Debt Disclosure [Line Items]
Amount of borrowings	$ 715,913
Federal Reserve Bank
Debt Disclosure [Line Items]
Amount of borrowings	175,605
Pacific Coast Bankers Bank
Debt Disclosure [Line Items]
Amount of borrowings	50,000
Zions Bank
Debt Disclosure [Line Items]
Amount of borrowings	25,000
First Horizon Bank
Debt Disclosure [Line Items]
Amount of borrowings	24,950
FHLB—San Francisco
Debt Disclosure [Line Items]
Amount of borrowings	$ 440,358