XML 49 R37.htm IDEA: XBRL DOCUMENT v3.21.2
Loans and Allowance for Credit Losses - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans $ 23,058,461   $ 23,058,461   $ 22,424,501
Percentage of loan portfolio as commercial loan 76.20%   76.20%    
Risk rated loans $ 1,000   $ 1,000    
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 $ 9,500   $ 9,500   10,700
Amount drawn from loans and other extensions of credit granted 6,000   6,000   6,800
Commercial loans held-for-sale 49,121   49,121   31,200
Mortgage loans held-for-sale 42,000   42,000   67,800
Loans sold     1,300,000 $ 1,300,000  
Gain (Loss) on Sale of Mortgage Loans 7,800 $ 19,500 28,180 $ 47,655  
Paycheck Protection Program [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans $ 708,700   $ 708,700   $ 1,800,000
Construction and land development          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Percentage of credit exposure to risk based capital 89.30%   89.30%   89.00%
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 252.40%   252.40%   264.00%