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Cash and Due from Banks	3 Months Ended
Cash and Due from Banks	Mar. 31, 2025
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks	Cash and Due from Banks For the three months ended March 31, 2025 and 2024, the Bank maintained average daily balances at the Federal Reserve Bank of Richmond ("Federal Reserve Bank") of $1.4 billion and $1.9 billion, respectively, on which interest is paid. Additionally, the Bank maintains interest-bearing balances with the Federal Home Loan Bank of Atlanta ("FHLB") and noninterest-bearing balances with domestic correspondent banks to cover associated costs for services they provide to the Bank.