Long-term Debt and Short-term Borrowings (Short Term Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Federal funds purchased	$ 628	$ 0
Securities sold under repurchase agreements	237,064	161,190
FHLB advances with original maturities of one year or less	650,000	100,000
Total short-term borrowings	$ 887,692	$ 261,190	$ 159,699

No definition available.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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