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Investment Securities - Additional Information (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Jan. 01, 2023
USD ($)
Mar. 31, 2023
USD ($)
Security
Dec. 31, 2022
USD ($)
Security
Available-for-sale Securities, Amortized Cost Basis [Abstract]      
Number of securities in unrealized loss positions, twelve months or more | Security   89 57
Available for sale securities unrealized aggregate loss   $ 12,468 $ 11,515
Available-for-sale investment securities aggregate, amortized historical cost   199,300  
Available-for-sale investment securities aggregate fair value that exceeded and amortized historical cost   $ 13,200 $ 14,800
Available-for-sale investment securities aggregate fair value and amortized historical cost percentage   (6.70%) (7.20%)
Available-for-sale investment securities decline in fair value and amortized historical cost   $ 1,600  
Held-to-maturity Securities [Abstract]      
Available For Sale Securities Continuous Unrealized Loss Position Greater Than Twelve Months Amortized Historical Cost Basis     $ 205,400
Provision for credit losses $ 0    
Gain (Loss) on Sale of Investments [Abstract]      
Securities pledged to collateralize deposit   134,600 86,000
Securities pledged to collateralize borrowing   75,500 $ 39,900
Investment securities, aggregate book value $ 450,000    
Aggregate fair value   $ 846,000  
State and Political Subdivisions [Member]      
Available-for-sale Securities, Amortized Cost Basis [Abstract]      
Number of securities in unrealized loss positions, twelve months or more | Security   23 17
Available for sale securities unrealized aggregate loss   $ 2,294 $ 2,171
Held-to-maturity Securities [Abstract]      
Held-to-maturity securities aggregate unrealized loss   $ 1,734 $ 1,469
Number of securities in unrealized loss positions, twelve months or more | Security   12 7
Held-to-maturity securities aggregate unrealized loss   $ 1,734 $ 1,469
Twelve months or more Fair Value   10,620 5,077
Debt Securities [Member]      
Held-to-maturity Securities [Abstract]      
Held-to-maturity securities aggregate unrealized loss   $ 9,092 $ 4,664
Number of securities in unrealized loss positions, twelve months or more | Security   82 29
Held-to-maturity securities aggregate unrealized loss   $ 9,092 $ 4,664
Twelve months or more Fair Value   91,235 $ 29,085
Held-to-Maturity Securities [Member]      
Available-for-sale Securities, Amortized Cost Basis [Abstract]      
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis   201,700  
Available-for-sale investment securities aggregate fair value that exceeded and amortized historical cost   $ 12,100  
Available-for-sale investment securities aggregate fair value and amortized historical cost percentage   (4.50%)