XML 49 R39.htm IDEA: XBRL DOCUMENT v3.21.2
Debt Securities - Maturity Schedule (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Available-for-Sale, Amortized Cost    
Due within one year $ 68,088  
Due after one year through five years 186,292  
Due after five years through ten years 250,903  
Due after ten years 243,770  
Total before mortgage-backed securities 749,053  
Mortgage-backed securities 6,579,684  
Amortized Cost 7,328,737 $ 5,145,866
Available-for-Sale, Fair Value    
Due within one year 68,877  
Due after one year through five years 195,336  
Due after five years through ten years 259,085  
Due after ten years 261,936  
Total before mortgage-backed securities 785,234  
Mortgage-backed securities 6,605,346  
Debt securities, available-for-sale 7,390,580 5,337,814
Held-to-Maturity, Amortized Cost    
Due within one year 1,529  
Due after one year through five years 27,382  
Due after five years through ten years 89,010  
Due after ten years 1,010,378  
Total before mortgage-backed securities 1,128,299  
Mortgage-backed securities 0  
Amortized Cost 1,128,299 189,836
Held-to-Maturity, Fair Value    
Due within one year 1,544  
Due after one year through five years 29,114  
Due after five years through ten years 94,026  
Due after ten years 1,021,769  
Total before mortgage-backed securities 1,146,453  
Mortgage-backed securities 0  
Total $ 1,146,453 $ 203,216