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Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differs from Carrying Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Financial assets:    
Debt securities held to maturity $ 238,621 $ 118,175
Debt securities held to maturity, fair value 226,524 119,077
Carrying Value    
Financial assets:    
Loans 2,774,848 2,619,461
Financial liabilities:    
Time deposits 936,848 1,048,078
Advances from the FHLB 830,524 809,577
Junior subordinated debentures 64,178 64,178
Carrying Value | Senior Notes    
Financial liabilities:    
Senior notes 59,052 58,894
Carrying Value | Subordinated Notes    
Financial liabilities:    
Junior subordinated debentures 29,199 0
Estimated Fair Value    
Financial assets:    
Loans 2,739,496 2,559,280
Financial liabilities:    
Time deposits 926,891 1,057,759
Advances from the FHLB 810,692 819,268
Junior subordinated debentures 63,835 61,212
Estimated Fair Value | Senior Notes    
Financial liabilities:    
Senior notes 60,438 63,214
Estimated Fair Value | Subordinated Notes    
Financial liabilities:    
Junior subordinated debentures $ 28,481 $ 0