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Investment Securities (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2013 Security | Jun. 30, 2012 | Dec. 31, 2012
Securities Available for Sale [Abstract] |  |  |
Amortized Cost | $ 275,232 |  | $ 268,527
Gross Unrealized Gains | 262 |  | 974
Gross Unrealized Losses | (8,363) |  | (1,200)
Fair Value | 267,131 |  | 268,301
Securities Held to Maturity [Abstract] |  |  |
Fair Value | 38 |  | 42
Available-for-sale Amortized Cost [Abstract] |  |  |
Due After One Year Through Five Years | 2,751 |  |
Due After Five Years Through Ten Years | 1,754 |  |
Due After Ten Years | 1,020 |  |
Total | 5,525 |  |
Mortgage-Backed Securities | 269,707 |  |
Amortized Cost | 275,232 |  |
Available-for-sale Fair Value [Abstract] |  |  |
Due After One Year Through Five Years | 2,855 |  |
Due After Five Years Through Ten Years | 1,740 |  |
Due After Ten Years | 743 |  |
Total | 5,338 |  |
Mortgage-Backed Securities | 261,793 |  |
Fair Value | 267,131 |  |
Held-to-maturity Amortized Cost [Abstract] |  |  |
Due After One Year Through Five Years | 38 |  |
Due After Five Years Through Ten Years | 0 |  |
Due After Ten Years | 0 |  |
Total | 38 |  |
Mortgage-Backed Securities | 0 |  |
Amortized Cost | 38 |  |
Held-to-maturity Fair Value [Abstract] |  |  |
Due After One Year Through Five Years | 38 |  |
Due After Five Years Through Ten Years | 0 |  |
Due After Ten Years | 0 |  |
Total | 38 |  |
Mortgage-Backed Securities | 0 |  |
Fair Value | 38 |  |
Proceeds from sale of investment securities available for sale | 36,217 | 60,654 |
Available-for-sale securities, gross realized gains | 191 | 990 |
Available-for-sale securities, gross realized losses | (193) | (110) |
Fair value of securities on nonaccrual status | 132 |  | 132
Investment securities pledged | 100,326 |  | 117,451
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 248,472 |  | 143,535
12 Months or Greater, Fair value | 132 |  | 132
Total, Fair Value | 248,604 |  | 143,667
Less Than 12 Months, Gross Unrealized Losses | (8,128) |  | (966)
12 Months or Greater, Gross Unrealized Losses | (235) |  | (234)
Total, Unrealized Losses | (8,363) |  | (1,200)
Debt securities with unrealized losses, depreciated (in hundredths) | 3.25% |  |
Number of asset-backed security owned | 1 |  |
Periods for asset-backed security in continuous unrealized loss position, minimum | 12 months |  |
Number of issuance of trust preferred security | 1 |  |
Book value of trust preferred security | 367 |  |
Unrealized loss on trust preferred security | 235 |  |
US Government Agencies Mortgage-Backed [Member] |  |  |
Securities Available for Sale [Abstract] |  |  |
Amortized Cost | 269,707 |  | 263,187
Gross Unrealized Gains | 156 |  | 835
Gross Unrealized Losses | (8,070) |  | (962)
Fair Value | 261,793 |  | 263,060
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 246,778 |  | 142,104
12 Months or Greater, Fair value | 0 |  | 0
Total, Fair Value | 246,778 |  | 142,104
Less Than 12 Months, Gross Unrealized Losses | (8,070) |  | (962)
12 Months or Greater, Gross Unrealized Losses | 0 |  | 0
Total, Unrealized Losses | (8,070) |  | (962)
State, County & Municipal [Member] |  |  |
Securities Available for Sale [Abstract] |  |  |
Amortized Cost | 4,158 |  | 3,974
Gross Unrealized Gains | 21 |  | 34
Gross Unrealized Losses | (58) |  | (4)
Fair Value | 4,121 |  | 4,004
Securities Held to Maturity [Abstract] |  |  |
Amortized Cost | 38 |  | 41
Gross Unrealized Gains | 0 |  | 1
Gross Unrealized Losses | 0 |  | 0
Fair Value | 38 |  | 42
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 1,694 |  | 1,431
12 Months or Greater, Fair value | 0 |  | 0
Total, Fair Value | 1,694 |  | 1,431
Less Than 12 Months, Gross Unrealized Losses | (58) |  | (4)
12 Months or Greater, Gross Unrealized Losses | 0 |  | 0
Total, Unrealized Losses | (58) |  | (4)
Corporate Obligations [Member] |  |  |
Securities Available for Sale [Abstract] |  |  |
Amortized Cost | 1,000 |  | 1,000
Gross Unrealized Gains | 85 |  | 105
Gross Unrealized Losses | 0 |  | 0
Fair Value | 1,085 |  | 1,105
Asset-Backed Securities [Member] |  |  |
Securities Available for Sale [Abstract] |  |  |
Amortized Cost | 367 |  | 366
Gross Unrealized Gains | 0 |  | 0
Gross Unrealized Losses | (235) |  | (234)
Fair Value | 132 |  | 132
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 0 |  | 0
12 Months or Greater, Fair value | 132 |  | 132
Total, Fair Value | 132 |  | 132
Less Than 12 Months, Gross Unrealized Losses | 0 |  | 0
12 Months or Greater, Gross Unrealized Losses | (235) |  | (234)
Total, Unrealized Losses | $ (235) |  | $ (234)

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- Definition Amount of held-to-maturity debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6872113&loc=d3e27232-111563 + Details
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- Definition Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, over several maturity groupings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d),(f) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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- Definition This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 137 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6872113&loc=d3e27232-111563 + Details
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- Definition The carrying amount of held-to-maturity securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph i -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5086-111524 + Details
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