Investments (Aggregate Carrying And Approximate Market Values Of Available-For-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	$ 372,168	$ 358,281
Securities available-for-sale, Gross Unrealized Gains	9,933	9,885
Securities available-for-sale, Gross Unrealized Losses	5,210	7,383
Securities available-for-sale, Estimated Fair Value	376,891	360,783
U.S Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	5,332	5,868
Securities available-for-sale, Gross Unrealized Gains	118	173
Securities available-for-sale, Estimated Fair Value	5,450	6,041
Obligations Of States And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	52,197	55,262
Securities available-for-sale, Gross Unrealized Gains	1,755	1,561
Securities available-for-sale, Gross Unrealized Losses	19	21
Securities available-for-sale, Estimated Fair Value	53,933	56,802
U.S. Government Agencies Mortgage-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	239,859	220,815
Securities available-for-sale, Gross Unrealized Gains	7,119	6,966
Securities available-for-sale, Gross Unrealized Losses	24	168
Securities available-for-sale, Estimated Fair Value	246,954	227,613
Private Label [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	4,080	5,117
Securities available-for-sale, Gross Unrealized Gains	44	45
Securities available-for-sale, Gross Unrealized Losses	28	6
Securities available-for-sale, Estimated Fair Value	4,096	5,156
Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	50,668	48,951
Securities available-for-sale, Gross Unrealized Gains	448	941
Securities available-for-sale, Gross Unrealized Losses	3,988	4,735
Securities available-for-sale, Estimated Fair Value	47,128	45,157
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	14,203	16,226
Securities available-for-sale, Gross Unrealized Gains	162	160
Securities available-for-sale, Gross Unrealized Losses	830	1,988
Securities available-for-sale, Estimated Fair Value	13,535	14,398
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	366,339	352,239
Securities available-for-sale, Gross Unrealized Gains	9,646	9,846
Securities available-for-sale, Gross Unrealized Losses	4,889	6,918
Securities available-for-sale, Estimated Fair Value	371,096	355,167
Marketable Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	4,105	4,318
Securities available-for-sale, Gross Unrealized Gains	231
Securities available-for-sale, Gross Unrealized Losses	321	465
Securities available-for-sale, Estimated Fair Value	4,015	3,853
Investment Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available-for-sale, Amortized Cost	1,724	1,724
Securities available-for-sale, Gross Unrealized Gains	56	39
Securities available-for-sale, Estimated Fair Value	$ 1,780	$ 1,763

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

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-Name FASB Staff Position (FSP)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 14

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ Details

- Definition

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.

+ References+ Details

- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References+ Details