XML 42 R33.htm IDEA: XBRL DOCUMENT v3.22.1
Investment Securities - Narrative (Details)
 3 Months Ended
Mar. 31, 2022
USD ($)
security
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
security
Debt Securities, Available-for-sale [Line Items]      
Held-to-maturity, allowance for credit Loss $ 0   $ 0
Transfer of securities from available-for-sale to held-to-maturity at fair value 357,500,000    
Net unrealized pre-tax loss 41,059,000   $ 13,026,000
Sales of investment securities $ 0 $ 0  
Number of investment securities in unrealized loss position | security 354   217
Number of investment securities in unrealized loss position longer than 12 months | security 17    
Number of investment securities in unrealized loss position less than 12 months | security 337    
Debt securities, available-for-sale unrealized loss position, allowance for credit loss $ 0    
Accumulated Other Comprehensive Income (Loss), Net of Tax      
Debt Securities, Available-for-sale [Line Items]      
Net unrealized pre-tax loss $ 14,800,000