Loans and Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 31,153,290		$ 31,153,290		$ 29,041,605
Percentage of loan portfolio as commercial loan	79.00%		79.00%
Risk rated loans	$ 1,500		$ 1,500
Percentage of credit exposure to risk based capital	25.00%		25.00%
Loans and other extensions of credit granted to directors, executive officers, and their related entities	$ 38,600		$ 38,600		20,900
Amount drawn from loans and other extensions of credit granted	35,100		35,100		16,000
Commercial loans held-for-sale	22,713		22,713		21,093
Mortgage loans held-for-sale	28,200		28,200		$ 12,900
Loans sold			313,100	$ 510,500
Gain (Loss) on Sale of Mortgage Loans	$ 1,600	$ 2,200	$ 3,620	$ 6,216
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of credit exposure to risk based capital	84.50%		84.50%		85.90%
Non-owner occupied commercial real estate and multifamily loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of credit exposure to risk based capital	256.70%		256.70%		249.60%