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Security Types (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
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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 | 23,744 | 20,065
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 22,079 | 19,460
Available-for-sale Securities, Fair Value, Total | 45,823 | 39,525
Available-for-sale Securities, Gross Unrealized Gain | 0 | 187
Available-for-sale Securities, Gross Unrealized Losses | 3,253 | 19
Available-for-sale Securities, Amortized Cost Basis | 49,076 | 39,357
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 | 3,679 | 4,700
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 142,311 | 136,760
Available-for-sale Securities, Fair Value, Total | 145,990 | 141,460
Available-for-sale Securities, Gross Unrealized Gain | 1,196 | 3,012
Available-for-sale Securities, Gross Unrealized Losses | 3,179 | 162
Available-for-sale Securities, Amortized Cost Basis | 147,973 | 138,610
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 | 0 | 111
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 2,096 | 1,830
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 19,739 | 21,006
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 45,077 | 54,891
Available-for-sale Securities, Fair Value, Total | 66,912 | 77,838
Available-for-sale Securities, Gross Unrealized Gain | 1,998 | 5,222
Available-for-sale Securities, Gross Unrealized Losses | 399 | 0
Available-for-sale Securities, Amortized Cost Basis | 65,313 | 72,616
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 | 742 | 652
Available-for-sale Securities, Fair Value, Total | 742 | 652
Available-for-sale Securities, Gross Unrealized Gain | 164 | 113
Available-for-sale Securities, Gross Unrealized Losses | 115 | 154
Available-for-sale Securities, Amortized Cost Basis | 693 | 693
Security Maturities, Total [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | 0 | 111
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 2,096 | 1,830
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 47,162 | 45,771
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 210,209 | 211,763
Available-for-sale Securities, Fair Value, Total | 259,467 | 259,475
Available-for-sale Securities, Gross Unrealized Gain | 3,358 | 8,534
Available-for-sale Securities, Gross Unrealized Losses | 6,946 | 335
Available-for-sale Securities, Amortized Cost Basis | $ 263,055 | $ 251,276

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