XML 48 R39.htm IDEA: XBRL DOCUMENT v3.22.2.2
AFS Securities (AFS securities with gross unrealized losses) (Details)
$ in Thousands
Sep. 30, 2022
USD ($)
Securities
Dec. 31, 2021
USD ($)
Securities
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months $ 28,926 $ 2,941
Fair Value, Less Than Twelve Months 372,655 236,825
Gross Unrealized Losses, Twelve Months or More 22,707 0
Fair Value, Twelve Months or More 194,643 0
Total Unrealized Losses $ 51,633 $ 2,941
Number of Securities in an unrealized loss position, Less Than Twelve Months, Fair Value | Securities 249 40
Number of Securities in an unrealized loss position, Twelve Months or More, Fair Value | Securities 305 0
Number of Securities in an unrealized loss position, Total Unrealized Losses | Securities 554 40
States and political subdivisions [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months $ 4,192 $ 88
Fair Value, Less Than Twelve Months 57,140 9,674
Gross Unrealized Losses, Twelve Months or More 3,333 0
Fair Value, Twelve Months or More 42,925 0
Total Unrealized Losses 7,525 88
Auction rate money market preferred [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months 0  
Fair Value, Less Than Twelve Months 0  
Gross Unrealized Losses, Twelve Months or More 721  
Fair Value, Twelve Months or More 2,479  
Total Unrealized Losses 721  
Collateralized mortgage obligations [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months 13,461 10
Fair Value, Less Than Twelve Months 209,720 11,165
Gross Unrealized Losses, Twelve Months or More 0 0
Fair Value, Twelve Months or More 0 0
Total Unrealized Losses 13,461 10
US Treasury Securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months 6,996 2,676
Fair Value, Less Than Twelve Months 62,985 209,703
Gross Unrealized Losses, Twelve Months or More 17,936 0
Fair Value, Twelve Months or More 143,806 0
Total Unrealized Losses 24,932 2,676
Corporate Debt Securities    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months 232 167
Fair Value, Less Than Twelve Months 1,768 6,283
Gross Unrealized Losses, Twelve Months or More 717 0
Fair Value, Twelve Months or More 5,433 0
Total Unrealized Losses 949 $ 167
Mortgage Backed Securities, Other [Member]    
Debt Securities, Available-for-sale [Line Items]    
Gross Unrealized Losses, Less Than Twelve Months 4,045  
Fair Value, Less Than Twelve Months 41,042  
Gross Unrealized Losses, Twelve Months or More 0  
Fair Value, Twelve Months or More 0  
Total Unrealized Losses $ 4,045