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Deposits (Scheduled Maturities) (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Scheduled maturities of time deposits
2021	$ 1,971,433,000
2022	141,388,000
2023	28,781,000
2024	11,205,000
2025	681,000
Thereafter	53,000
Total time, certificates of deposit	2,153,541,000	$ 2,012,300,000
Time Deposits 250,000 or exceed	250,000	$ 1,085,404,000	$ 929,860
Scheduled maturities of time deposits in amounts of $100,000 or more
Due within 3 months or less	606,807,000
Due after 3 months and within 6 months	385,859,000
Due after 6 months and within 12 months	498,626,000
Due after 12 months	129,792,000
Total	$ 1,621,084,000

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The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) or exceed the FDIC insurance limit of $250,000.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing after twelve months from the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within six to twelve months after the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within three months or fewer from the balance sheet date.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more, maturing within three to six months after the balance sheet date.

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Amount of time deposit maturing after fifth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in fourth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in third fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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