Investment Securities (Summary Of Amortized Cost And Fair Values Of Investment Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Held to Maturity	$ 10,443	$ 11,797
Gross Unrealized Gains, Held-to-maturity	242	488
Gross Unrealized Losses, Held to Maturity	(8)	(3)
Fair Value, Held to Maturity	10,677	12,282
Amortized Cost, Available for Sale	427,113	401,136
Gross Unrealized Gains, Available for Sale	1,620	1,924
Gross Unrealized Losses, Available for Sale	(2,515)	(2,729)
Available-for-sale Securities	426,218	400,331
Federal Agency Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	69,691	78,363
Gross Unrealized Gains, Available for Sale	201	220
Gross Unrealized Losses, Available for Sale	(198)	(373)
Available-for-sale Securities	69,694	78,210
Obligations Of State And Political Subdivisions [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Held to Maturity	10,443	11,797
Gross Unrealized Gains, Held-to-maturity	242	488
Gross Unrealized Losses, Held to Maturity	(8)	(3)
Fair Value, Held to Maturity	10,677	12,282
Amortized Cost, Available for Sale	46,105	47,079
Gross Unrealized Gains, Available for Sale	461	620
Gross Unrealized Losses, Available for Sale	(191)	(134)
Available-for-sale Securities	46,375	47,565
Residential Mortgage-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	282,035	240,804
Gross Unrealized Gains, Available for Sale	573	936
Gross Unrealized Losses, Available for Sale	(1,966)	(1,852)
Available-for-sale Securities	280,642	239,888
Asset-Backed Securities [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	9,265	9,639
Gross Unrealized Losses, Available for Sale	(88)	(224)
Available-for-sale Securities	9,177	9,415
Corporate Debt [Member]
Held To Maturity Securities And Available For Sale Securities [Line Items]
Amortized Cost, Available for Sale	20,017	25,251
Gross Unrealized Gains, Available for Sale	385	148
Gross Unrealized Losses, Available for Sale	(72)	(146)
Available-for-sale Securities	$ 20,330	$ 25,253

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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