Loans and Leases - Schedule of Loans Pledged as Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
FHLB of Atlanta
Less: Advances	$ 639,000	$ 645,000
FHLB of Atlanta \| Non-PCD
FHLB of Atlanta
Lendable collateral value of pledged non-PCD loans	13,782,000	9,564,000
Less: Advances	639,000	645,000
Available borrowing capacity	13,143,000	8,919,000
Federal Reserve Bank [Abstract]
Pledged non-PCD loans (contractual balance)	19,889,000	14,507,000
FRB \| Non-PCD
Federal Reserve Bank [Abstract]
Lendable collateral value of pledged non-PCD loans	4,242,000	3,951,000
Advances from Federal Reserve Bank	0	0
Available borrowing capacity	4,242,000	3,951,000
Pledged non-PCD loans (contractual balance)	$ 4,982,000	$ 4,806,000

Advances from Federal Reserve Bank

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Federal Reserve Bank

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Federal Reserve Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds

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Federal Reserve Bank, Advances, General Debt Obligations, Maximum Amount Available

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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