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Fair Value Measurements - Schedule of Estimated Fair Value of Financial Instruments where Fair Value Differs from Carrying Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Financial assets:    
Debt securities held to maturity, carrying value $ 239,258 $ 242,101
Debt securities held to maturity, fair value 218,388 217,609
Carrying Value    
Financial assets:    
Loans 3,408,518 3,314,553
Financial liabilities:    
Time deposits 1,204,301 1,119,510
Advances from the FHLB 1,052,012 906,486
Junior subordinated debentures 64,178 64,178
Carrying Value | Senior notes    
Financial liabilities:    
Senior notes 59,289 59,210
Carrying Value | Subordinated notes    
Financial liabilities:    
Junior subordinated debentures 29,326 29,284
Estimated Fair Value    
Financial assets:    
Loans 3,287,940 3,181,696
Financial liabilities:    
Time deposits 1,188,807 1,099,294
Advances from the FHLB 1,048,376 873,852
Junior subordinated debentures 63,111 64,182
Estimated Fair Value | Senior notes    
Financial liabilities:    
Senior notes 59,012 58,755
Estimated Fair Value | Subordinated notes    
Financial liabilities:    
Junior subordinated debentures $ 28,481 $ 28,481