Borrowings, Short-term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Abstract]
Repurchase agreements	$ 232,712	$ 243,814
Federal funds purchased	1,180	7,312
Total short-term debt	$ 233,892	$ 251,126
Federal Funds Purchased [Member]
Short-term Debt [Abstract]
Average interest rate	2.18%
Repurchase Agreements [Member]
Short-term Debt [Abstract]
Average interest rate	2.01%
Maximum balance for repurchase agreements at any month-end	$ 253,200
Average balance of repurchase agreements	$ 239,900

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Weighted average interest rate of debt outstanding.

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- Definition

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

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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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- Definition

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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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period.

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