Securities Available For Sale (Summary Of Securities Available For Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available for sale Securities [Line Items]
Available for Sale, Amortized Cost	$ 496,179	$ 458,370
Available for Sale, Gross Unrealized Gains	11,831	14,487
Available for Sale, Gross Unrealized Losses	3,041	2,332
Available for Sale, Estimated Fair Value	504,969	470,525
US Government-Sponsored Enterprises [Member]
Schedule of Available for sale Securities [Line Items]
Available for Sale, Amortized Cost	304,106	282,217
Available for Sale, Gross Unrealized Gains	5,042	7,530
Available for Sale, Gross Unrealized Losses	2,155	1,537
Available for Sale, Estimated Fair Value	306,993	288,210
US Government Agency [Member]
Schedule of Available for sale Securities [Line Items]
Available for Sale, Amortized Cost	78,408	82,249
Available for Sale, Gross Unrealized Gains	1,269	1,626
Available for Sale, Gross Unrealized Losses	547	529
Available for Sale, Estimated Fair Value	79,130	83,346
Private Label [Member]
Schedule of Available for sale Securities [Line Items]
Available for Sale, Amortized Cost	2,713	3,723
Available for Sale, Gross Unrealized Gains	762	815
Available for Sale, Gross Unrealized Losses	11	14
Available for Sale, Estimated Fair Value	3,464	4,524
Obligations Of States And Political Subdivisions Thereof [Member]
Schedule of Available for sale Securities [Line Items]
Available for Sale, Amortized Cost	110,952	90,181
Available for Sale, Gross Unrealized Gains	4,758	4,516
Available for Sale, Gross Unrealized Losses	328	252
Available for Sale, Estimated Fair Value	$ 115,382	$ 94,445

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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-Publisher FASB
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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