XML 57 R46.htm IDEA: XBRL DOCUMENT v3.20.2
Securities - Summary of Contractual Maturity Information for Securities Available for Sale (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]    
Due in 1 year or less, Amortized Cost $ 210,489  
Due after 1 year through 5 years, Amortized Cost 1,009,733  
Due after 5 years through 10 years, Amortized Cost 578,083  
Due after 10 years, Amortized Cost 1,768,601  
Total, Amortized Cost 3,566,906  
Mortgage-backed securities, Amortized Cost 4,549,567  
Amortized Cost 8,116,473 $ 7,323,980
Due in 1 year or less, Fair Value 211,619  
Due after 1 year through 5 years, Fair Value 1,030,371  
Due after 5 years through 10 years, Fair Value 604,505  
Due after 10 years, Fair Value 1,887,672  
Total, Fair Value 3,734,167  
Mortgage-backed securities, Fair Value 4,749,457  
Total securities available for sale, Fair Value $ 8,483,624 $ 7,447,362