Investment Securities (Summary Of Amortized Cost And Fair Values Of Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Held to Maturity	$ 10,413	$ 10,443
Gross Unrealized Gains, Held-to-maturity	269	242
Gross Unrealized Losses, Held to Maturity	(2)	(8)
Fair Value, Held to Maturity	10,680	10,677
Amortized Cost, Available for Sale	422,672	427,113
Gross Unrealized Gains, Available for Sale	1,856	1,620
Gross Unrealized Losses, Available for Sale	(1,888)	(2,515)
Available-for-sale Securities	422,640	426,218
Federal Agency Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	66,633	69,691
Gross Unrealized Gains, Available for Sale	256	201
Gross Unrealized Losses, Available for Sale	(190)	(198)
Available-for-sale Securities	66,699	69,694
Obligations Of State And Political Subdivisions [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Held to Maturity	10,413	10,443
Gross Unrealized Gains, Held-to-maturity	269	242
Gross Unrealized Losses, Held to Maturity	(2)	(8)
Fair Value, Held to Maturity	10,680	10,677
Amortized Cost, Available for Sale	45,952	46,105
Gross Unrealized Gains, Available for Sale	565	461
Gross Unrealized Losses, Available for Sale	(105)	(191)
Available-for-sale Securities	46,412	46,375
Residential Mortgage-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	281,179	282,035
Gross Unrealized Gains, Available for Sale	582	573
Gross Unrealized Losses, Available for Sale	(1,498)	(1,966)
Available-for-sale Securities	280,263	280,642
Asset-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	8,890	9,265
Gross Unrealized Gains, Available for Sale	11
Gross Unrealized Losses, Available for Sale	(34)	(88)
Available-for-sale Securities	8,867	9,177
Corporate Debt [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	20,018	20,017
Gross Unrealized Gains, Available for Sale	442	385
Gross Unrealized Losses, Available for Sale	(61)	(72)
Available-for-sale Securities	$ 20,399	$ 20,330

Held to maturity securities and available for sale securities.

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- Definition

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

+ References

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

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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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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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Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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