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Security Types (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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US Government and Government Agencies and Authorities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | $ 0 | $ 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 10,101 | 5,013
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 30,135 | 46,072
Available-for-sale Securities, Fair Value, Total | 40,236 | 51,085
Available-for-sale Securities, Gross Unrealized Gain (Loss) | 280 | 182
Available-for-sale Securities, Gross Unrealized Losses | 3 | 1
Available-for-sale Securities, Amortized Cost Basis | 39,959 | 50,904
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 5,238 | 14,935
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 147,430 | 149,863
Available-for-sale Securities, Fair Value, Total | 152,668 | 164,798
Available-for-sale Securities, Gross Unrealized Gain (Loss) | 3,057 | 2,534
Available-for-sale Securities, Gross Unrealized Losses | 81 | 129
Available-for-sale Securities, Amortized Cost Basis | 149,692 | 162,393
US States and Political Subdivisions Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | 113 | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 2,187 | 414
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 19,186 | 17,761
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 62,226 | 63,538
Available-for-sale Securities, Fair Value, Total | 83,712 | 81,713
Available-for-sale Securities, Gross Unrealized Gain (Loss) | 4,916 | 4,339
Available-for-sale Securities, Gross Unrealized Losses | 31 | 48
Available-for-sale Securities, Amortized Cost Basis | 78,827 | 77,422
Trust Preferred Securities Pooled [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value |  | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value |  | 0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value |  | 0
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value |  | 100
Available-for-sale Securities, Fair Value, Total |  | 100
Available-for-sale Securities, Gross Unrealized Gain (Loss) |  | 0
Available-for-sale Securities, Gross Unrealized Losses |  | 130
Available-for-sale Securities, Amortized Cost Basis |  | 230
Trust Preferred Securities Individual Issuer [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 0 | 0
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 630 | 1,886
Available-for-sale Securities, Fair Value, Total | 630 | 1,886
Available-for-sale Securities, Gross Unrealized Gain (Loss) | 81 | 186
Available-for-sale Securities, Gross Unrealized Losses | 144 | 243
Available-for-sale Securities, Amortized Cost Basis | 693 | 1,943
Security Maturities, Total [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | 113 | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 2,187 | 414
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 34,525 | 37,709
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 240,421 | 261,459
Available-for-sale Securities, Fair Value, Total | 277,246 | 299,582
Available-for-sale Securities, Gross Unrealized Gain (Loss) | 8,334 | 7,241
Available-for-sale Securities, Gross Unrealized Losses | 259 | 551
Available-for-sale Securities, Amortized Cost Basis | $ 269,171 | $ 292,892

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