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Investment Securities (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Dec. 31, 2011
Securities Available for Sale: |  |  |
Amortized Cost | $ 292,348 |  | $ 300,998
Gross Unrealized Gains | 3,059 |  | 3,408
Gross Unrealized Losses | (462) |  | (515)
Fair Value | 294,945 |  | 303,891
Securities Held to Maturity: |  |  |
Fair Value | 45 |  | 46
Available-for-sale Amortized Cost [Abstract] |  |  |
Due Less Than One Year | 125 |  |
Due After One Year Through Five Years | 2,351 |  |
Due After Five Years Through Ten Years | 5,690 |  |
Due After Ten Years | 890 |  |
Total | 9,056 |  |
Mortgage-Backed Securities | 283,292 |  |
Amortized Cost | 292,348 |  | 300,998
Available-for-sale Fair Value [Abstract] |  |  |
Due Less Than One Year | 127 |  |
Due After One Year Through Five Years | 2,495 |  |
Due After Five Years Through Ten Years | 5,925 |  |
Due After Ten Years | 667 |  |
Total | 9,214 |  |
Mortgage-Backed Securities | 285,731 |  |
Fair Value | 294,945 |  | 303,891
Held-to-maturity Amortized Cost [Abstract] |  |  |
Due Less Than One Year | 0 |  |
Due After One Year Through Five Years | 44 |  |
Due After Five Years Through Ten Years | 0 |  |
Due After Ten Years | 0 |  |
Total | 44 |  |
Mortgage-Backed Securities | 0 |  |
Amortized Cost | 44 |  |
Held-to-maturity Fair Value [Abstract] |  |  |
Due Less Than One Year | 0 |  |
Due After One Year Through Five Years | 45 |  |
Due After Five Years Through Ten Years | 0 |  |
Due After Ten Years | 0 |  |
Total | 45 |  |
Mortgage-Backed Securities | 0 |  |
Fair Value | 45 |  | 46
Proceeds from sale of investment securities available for sale | 60,654 | 154,560 |
Available-for-sale securities, gross realized gains | 990 | 1,133 |
Available-for-sale securities, gross realized losses | (110) | (1) |
Other than temporary impairment charges | (60) |  |
Fair value of securities on nonaccrual status | 132 | 132 |
Investment securities pledged | 105,336 | 136,838 |
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 60,081 |  | 27,664
12 Months or Greater, Fair value | 207 |  | 1,195
Total, Fair Value | 60,288 |  | 28,859
Less Than 12 Months, Gross Unrealized Losses | (227) |  | (209)
12 Months or Greater, Gross Unrealized Losses | (235) |  | (306)
Total, Unrealized Losses | (462) |  | (515)
Debt securities with unrealized losses, depreciated (in hundredth) | 0.76% |  |
Number of asset-backed security owned | 1 |  |
Periods for asset-backed security in continuous unrealized loss position, minimum | 12 years |  |
Number of issuance of trust preferred security | 1 |  |
Book value of trust preferred security | 367 |  |
Unrealized loss on trust preferred security | 235 |  |
Other than temporary impairment written off | 60 |  |
US Government Agencies Mortgage-Backed [Member] |  |  |
Securities Available for Sale: |  |  |
Amortized Cost | 283,292 |  | 291,097
Gross Unrealized Gains | 2,665 |  | 3,152
Gross Unrealized Losses | (226) |  | (188)
Fair Value | 285,731 |  | 294,061
Available-for-sale Amortized Cost [Abstract] |  |  |
Amortized Cost | 283,292 |  | 291,097
Available-for-sale Fair Value [Abstract] |  |  |
Fair Value | 285,731 |  | 294,061
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 59,875 |  | 26,440
12 Months or Greater, Fair value | 0 |  | 0
Total, Fair Value | 59,875 |  | 26,440
Less Than 12 Months, Gross Unrealized Losses | (226) |  | (188)
12 Months or Greater, Gross Unrealized Losses | 0 |  | 0
Total, Unrealized Losses | (226) |  | (188)
State, County & Municipal [Member] |  |  |
Securities Available for Sale: |  |  |
Amortized Cost | 7,689 |  | 7,475
Gross Unrealized Gains | 279 |  | 132
Gross Unrealized Losses | (1) |  | (23)
Fair Value | 7,967 |  | 7,584
Securities Held to Maturity: |  |  |
Amortized Cost | 44 |  | 46
Gross Unrealized Gains | 1 |  | 0
Gross Unrealized Losses | 0 |  | 0
Fair Value | 45 |  | 46
Available-for-sale Amortized Cost [Abstract] |  |  |
Amortized Cost | 7,689 |  | 7,475
Available-for-sale Fair Value [Abstract] |  |  |
Fair Value | 7,967 |  | 7,584
Held-to-maturity Fair Value [Abstract] |  |  |
Fair Value | 45 |  | 46
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 206 |  | 1,224
12 Months or Greater, Fair value | 75 |  | 73
Total, Fair Value | 281 |  | 1,297
Less Than 12 Months, Gross Unrealized Losses | (1) |  | (21)
12 Months or Greater, Gross Unrealized Losses | 0 |  | (2)
Total, Unrealized Losses | (1) |  | (23)
Corporate Obligations [Member] |  |  |
Securities Available for Sale: |  |  |
Amortized Cost | 1,000 |  | 2,000
Gross Unrealized Gains | 115 |  | 124
Gross Unrealized Losses | 0 |  | (10)
Fair Value | 1,115 |  | 2,114
Available-for-sale Amortized Cost [Abstract] |  |  |
Amortized Cost | 1,000 |  | 2,000
Available-for-sale Fair Value [Abstract] |  |  |
Fair Value | 1,115 |  | 2,114
Continuous unrealized loss position [Abstract] |  |  |
Less Than 12 Months, Fair value | 0 |  | 0
12 Months or Greater, Fair value | 0 |  | 990
Total, Fair Value | 0 |  | 990
Less Than 12 Months, Gross Unrealized Losses | 0 |  | 0
12 Months or Greater, Gross Unrealized Losses | 0 |  | (10)
Total, Unrealized Losses | 0 |  | (10)
Asset-Backed Securities [Member] |  |  |
Securities Available for Sale: |  |  |
Amortized Cost | 367 |  | 426
Gross Unrealized Gains | 0 |  | 0
Gross Unrealized Losses | (235) |  | (294)
Fair Value | 132 |  | 132
Available-for-sale Amortized Cost [Abstract] |  |  |
Amortized Cost | 367 |  | 426
Available-for-sale Fair Value [Abstract] |  |  |
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) |  | (294)
Total, Unrealized Losses | $ (235) |  | $ (294)

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