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Fair Value Measurements - Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Balance sheet assets    
Securities held-to-maturity, net $ 1,081,847 $ 928,935
Carrying Amount    
Balance sheet assets    
Securities held-to-maturity, net 1,081,847 928,935
Other investments 91,042 69,801
Loans held-for-sale 681 110
Loans, net 11,434,255 11,082,405
State tax credits, held-for-sale 14,408 14,663
Servicing asset 3,253 2,256
Balance sheet liabilities    
Certificates of deposit 1,651,173 1,369,604
Subordinated debentures and notes 93,617 156,551
FHLB advances 327,000 0
Other borrowings 247,006 280,821
Estimated fair value    
Balance sheet assets    
Securities held-to-maturity, net 1,032,361 858,871
Other investments 91,042 69,801
Loans held-for-sale 681 110
Loans, net 11,401,145 10,983,459
State tax credits, held-for-sale 15,729 15,518
Servicing asset 4,853 3,570
Balance sheet liabilities    
Certificates of deposit 1,636,546 1,364,377
Subordinated debentures and notes 92,150 155,102
FHLB advances 327,000 0
Other borrowings $ 223,538 $ 258,461