Investment Securities (Summary Of Amortized Cost And Fair Values Of Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Held to Maturity	$ 10,382	$ 10,443
Gross Unrealized Gains, Held-to-maturity	252	242
Gross Unrealized Losses, Held to Maturity	(2)	(8)
Fair Value, Held to Maturity	10,632	10,677
Amortized Cost, Available for Sale	424,172	427,113
Gross Unrealized Gains, Available for Sale	1,856	1,620
Gross Unrealized Losses, Available for Sale	(1,997)	(2,515)
Available-for-sale Securities	424,031	426,218
Federal Agency Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	64,502	69,691
Gross Unrealized Gains, Available for Sale	353	201
Gross Unrealized Losses, Available for Sale	(63)	(198)
Available-for-sale Securities	64,792	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	10,382	10,443
Gross Unrealized Gains, Held-to-maturity	252	242
Gross Unrealized Losses, Held to Maturity	(2)	(8)
Fair Value, Held to Maturity	10,632	10,677
Amortized Cost, Available for Sale	45,306	46,105
Gross Unrealized Gains, Available for Sale	624	461
Gross Unrealized Losses, Available for Sale	(74)	(191)
Available-for-sale Securities	45,856	46,375
Residential Mortgage-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	285,835	282,035
Gross Unrealized Gains, Available for Sale	411	573
Gross Unrealized Losses, Available for Sale	(1,771)	(1,966)
Available-for-sale Securities	284,475	280,642
Asset-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	8,511	9,265
Gross Unrealized Gains, Available for Sale	18
Gross Unrealized Losses, Available for Sale	(32)	(88)
Available-for-sale Securities	8,497	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	450	385
Gross Unrealized Losses, Available for Sale	(57)	(72)
Available-for-sale Securities	$ 20,411	$ 20,330

Held to maturity securities and available for sale securities.

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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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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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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