XML 61 R48.htm IDEA: XBRL DOCUMENT v3.21.2
Investment Securities and Certificates of Deposit - Scheduled Maturities of Available-for-Sale Debt Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]    
Due within one year, amortized cost $ 452,955 $ 402,824
Debt Securities, Available-for-sale, Amortized Cost 452,955 402,824
Due within one year, fair value 452,974 402,863
Total, fair value $ 452,974 $ 402,863