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Investment Securities Contractual Maturities of Investment Securities (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013
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Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] |  |  |
Due in 1 year or less, Securities available for sale, Amortized Cost | $ 0 | $ 717 | $ 1,345
Due in 1 to 5 years, Securities available for sale, Amortized Cost | 20,101 | 20,547 | 139
Due in 5 to 10 years, Securities available for sale, Amortized Cost | 28,261 | 16,114 | 2,426
Due after 10 years, Securities available for sale, Amortized Cost | 250,943 | 276,919 | 287,489
Equity securities, Amortized Cost | 2,196 | 1,666 | 1,617
Amortized Cost | 301,501 | 315,963 | 293,016
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |  |  |
Due in 1 year or less, Securities available for sale, Fair Value (Estimated) | 0 | 721 | 1,368
Due in 1 to 5 years, Securities available for sale, Fair Value (Estimated) | 20,557 | 20,636 | 140
Due in 5 to 10 years, Securities available for sale, Fair Value (Estimated) | 28,483 | 16,267 | 2,563
Due after 10 years, Securities available for sale, Fair Value (Estimated) | 252,558 | 266,420 | 281,992
Equity securities, Fair Value (Estimated) | 2,282 | 1,780 | 1,672
Fair Value (Estimated) | 303,880 | 305,824 | 287,735
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount [Abstract] |  |  |
Due in 1 year or less, Securities available to be held to maturity, Amortized Cost | 0 | 268 | 766
Due in 1 to 5 years, Securities to be held to maturity, Amortized Cost | 11,326 | 6,420 | 6,081
Due in 5 to 10 years, Securities to be held to maturity, Amortized Cost | 44,528 | 33,442 | 24,873
Due after 10 years, Securities to be held to maturity, Amortized Cost | 142,281 | 129,147 | 145,544
Securities to be held to maturity, Amortized Cost | 198,135 | 169,277 | 177,264
Held-to-maturity Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] |  |  |
Due in 1 year or less, Securities available to be held to maturity, Fair Value (Estimated) | 0 | 273 | 773
Due in 1 to 5 years, Securities to be held to maturity, Fair Value (Estimated) | 11,610 | 6,790 | 6,462
Due in 5 to 10 years, Securities to be held to maturity, Fair Value (Estimated) | 46,301 | 33,828 | 26,299
Due after 10 years, Securities to be held to maturity, Fair Value (Estimated) | 137,639 | 117,445 | 141,256
Fair Value (Estimated) | $ 195,550 | $ 158,336 | $ 174,790

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- Definition This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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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 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 + Details
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- Definition Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 + Details
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- Definition Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant