XML 53 R43.htm IDEA: XBRL DOCUMENT v3.23.1
Securities - Schedule of Book Values and Fair Values of Investment Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Amortized Cost    
Due within one year $ 0  
Due after one year but within five years 177,020  
Due after five years but within ten years 88,122  
Due after ten years 1,000  
Mortgage-backed securities 2,432,854  
Amortized Cost 2,698,996 $ 2,758,556
Fair Value    
Due within one year 0  
Due after one year but within five years 172,525  
Due after five years but within ten years 74,362  
Due after ten years 999  
Mortgage-backed securities 2,042,379  
Total securities 2,290,265 2,314,493
Amortized Cost    
Due within one year 0  
Due after one year but within five years 997  
Due after five years but within ten years 73,454  
Due after ten years 450,984  
Mortgage-backed securities 14,360  
Amortized Cost 539,795 541,700
Fair Value    
Due within one year 0  
Due after one year but within five years 894  
Due after five years but within ten years 62,882  
Due after ten years 371,589  
Mortgage-backed securities 13,539  
Total securities $ 448,904 $ 432,528