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Investment Securities (Contractual Maturities of Securities) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
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Contractual maturities of securities |  |
Available for Sale, Cost Basis, After 1 year but within 5 years | $ 17,807 |
Available for Sale, Cost Basis, After 5 years but within 10 years | 17,838 |
Available for Sale, Cost Basis, After 10 years but within15 years | 62,453 |
Available for Sale, Cost Basis, Over 15 years | 48,260 |
Available for Sale, Cost Basis, Total | 146,358 |
Available for Sale, Fair Value, After 1 year but within 5 years | 17,787 |
Available for Sale, Fair Value, After 5 years but within 10 years | 18,026 |
Available for Sale, Fair Value, After 10 years but within15 years | 63,577 |
Available for Sale, Fair Value, Over 15 years | 49,675 |
Available for Sale, Fair Value, Total | 149,065 | 151,538
Held to Maturity, Cost Basis, Within 1 year |  |
Held to Maturity, Cost Basis, After 1 year but within 5 years | 3,000 |
Held to Maturity, Cost Basis, After 5 years but within 10 years | 1,769 |
Held to Maturity, Cost Basis, After 10 years but within 15 years | 1,012 |
Held to Maturity, Cost Basis, Over 15 years | 12,264 |
Held to Maturity, Cost Basis, Total | 18,045 | 13,723
Held to Maturity, Fair Value, Within 1 year |  |
Held to Maturity, Fair Value, After 1 year but within 5 years | 2,969 |
Held to Maturity, Fair Value, After 5 years but within 10 years | 1,642 |
Held to Maturity, Fair Value, After 10 years but within 15 years | 934 |
Held to Maturity, Fair Value, Over 15 years | 12,381 |
Held to Maturity, Fair Value, Total | 17,926 | 14,266
U.S. Agency [Member] |  |
Contractual maturities of securities |  |
Available for Sale, Cost Basis, After 1 year but within 5 years | 8,073 |
Available for Sale, Cost Basis, After 5 years but within 10 years | 1,000 |
Available for Sale, Cost Basis, After 10 years but within15 years |  |
Available for Sale, Cost Basis, Over 15 years |  |
Available for Sale, Cost Basis, Total | 9,073 |
Available for Sale, Fair Value, After 1 year but within 5 years | 8,013 |
Available for Sale, Fair Value, After 5 years but within 10 years | 955 |
Available for Sale, Fair Value, After 10 years but within15 years |  |
Available for Sale, Fair Value, Over 15 years |  |
Available for Sale, Fair Value, Total | 8,968 | 5,911
U.S. Agency mortgage-backed securities [Member] |  |
Contractual maturities of securities |  |
Available for Sale, Cost Basis, After 1 year but within 5 years | 1,740 |
Available for Sale, Cost Basis, After 5 years but within 10 years | 12,841 |
Available for Sale, Cost Basis, After 10 years but within15 years | 62,453 |
Available for Sale, Cost Basis, Over 15 years | 48,260 |
Available for Sale, Cost Basis, Total | 125,294 |
Available for Sale, Fair Value, After 1 year but within 5 years | 1,853 |
Available for Sale, Fair Value, After 5 years but within 10 years | 13,230 |
Available for Sale, Fair Value, After 10 years but within15 years | 63,577 |
Available for Sale, Fair Value, Over 15 years | 49,675 |
Available for Sale, Fair Value, Total | 128,335 | 137,735
Held to Maturity, Cost Basis, Within 1 year |  |
Held to Maturity, Cost Basis, After 1 year but within 5 years |  |
Held to Maturity, Cost Basis, After 5 years but within 10 years | 1,769 |
Held to Maturity, Cost Basis, After 10 years but within 15 years |  |
Held to Maturity, Cost Basis, Over 15 years | 11,269 |
Held to Maturity, Cost Basis, Total | 13,038 | 9,318
Held to Maturity, Fair Value, Within 1 year |  |
Held to Maturity, Fair Value, After 1 year but within 5 years |  |
Held to Maturity, Fair Value, After 5 years but within 10 years | 1,642 |
Held to Maturity, Fair Value, After 10 years but within 15 years |  |
Held to Maturity, Fair Value, Over 15 years | 11,406 |
Held to Maturity, Fair Value, Total | 13,048 | 9,896
Corporate bonds [Member] |  |
Contractual maturities of securities |  |
Available for Sale, Cost Basis, After 1 year but within 5 years | 7,994 |
Available for Sale, Cost Basis, After 5 years but within 10 years | 3,997 |
Available for Sale, Cost Basis, After 10 years but within15 years |  |
Available for Sale, Cost Basis, Over 15 years |  |
Available for Sale, Cost Basis, Total | 11,991 |
Available for Sale, Fair Value, After 1 year but within 5 years | 7,921 |
Available for Sale, Fair Value, After 5 years but within 10 years | 3,841 |
Available for Sale, Fair Value, After 10 years but within15 years |  |
Available for Sale, Fair Value, Over 15 years |  |
Available for Sale, Fair Value, Total | 11,762 | 7,892
Corporate bonds and other securities [Member] |  |
Contractual maturities of securities |  |
Held to Maturity, Cost Basis, Within 1 year |  |
Held to Maturity, Cost Basis, After 1 year but within 5 years | 3,000 |
Held to Maturity, Cost Basis, After 5 years but within 10 years |  |
Held to Maturity, Cost Basis, After 10 years but within 15 years | 1,012 |
Held to Maturity, Cost Basis, Over 15 years | 995 |
Held to Maturity, Cost Basis, Total | 5,007 |
Held to Maturity, Fair Value, Within 1 year |  |
Held to Maturity, Fair Value, After 1 year but within 5 years | 2,969 |
Held to Maturity, Fair Value, After 5 years but within 10 years |  |
Held to Maturity, Fair Value, After 10 years but within 15 years | 934 |
Held to Maturity, Fair Value, Over 15 years | 975 |
Held to Maturity, Fair Value, Total | $ 4,878 |

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