Short-Term Debt (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Abstract]
Advances from Federal Home Loan Banks	$ 0	$ 0	$ 40,000
Securities Sold under Agreements to Repurchase	295,956	211,255	221,911
Federal Funds Purchased	0	0	0
Federal Home Loan Bank advances (Avg Bal)	151	10,752	74,102
Securities sold under agreements to repurchase (Avg Bal)	253,289	200,697	190,702
Federal Funds purchased (Avg Bal)	16	3	353
Federal Home Loan Bank advances (Max Outstanding)	9,900	154,000	185,000
Securities sold under agreements to repurchase (Max Outstanding)	295,956	226,603	221,911
Federal Funds Purchased Maximum Outstanding at Any Month End	$ 0	$ 0	$ 10,000
Federal Home Loan Bank advances (weighted average interest rate)	0.85%	2.72%	2.21%
Securities sold under agreements to repurchase (weighted average interest rate)	0.39%	1.59%	0.93%
Federal Funds purchased (weighted average interest rate)	0.83%	2.84%	2.10%
Federal Home Loan Bank advances (end of year interest rate)	0.41%	1.85%	2.76%
Securities sold under agreements to repurchase (end of year interest rate)	0.34%	1.51%	0.80%
Federal Funds Purchased Average Interest Rate at Period End	0.00%	0.00%	0.00%

Federal Funds Purchased Activity For Year Average Interest Rate For Year

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Federal Funds Purchased, Activity for Year, Average Balance of Agreements Outstanding

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Federal Funds Purchased Average Interest Rate at Period End

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Federal Funds Purchased Maximum Outstanding at Any Month End

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Securities Sold Under Agreements To Repurchase Activity For Year Average Balance Of Agreements Outstanding

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Securities Sold Under Agreements To Repurchase Activity For Year Average Interest Rate At Period End

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Securities Sold Under Agreements To Repurchase Activity For Year Average Interest Rate For Year

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Securities Sold Under Agreements To Repurchase Activity For Year Maximum Outstanding At Any Month End

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- Definition

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

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The calculated average balance outstanding for the year for all Federal Home Loan Bank advances as of the Balance Sheet date.

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The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

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The calculated weighted average interest rate for Federal Home Loan Bank advances for the period ended as of the Balance Sheet date.

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The maximum balance outstanding at any month end during the period as of the Balance Sheet date.

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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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