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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Statements Of Comprehensive Income [Abstract] |  |
Net income | $ 4,814 | $ 1,664
Available-for-sale investment securities: |  |
Gross unrealized holding gains arising in the period | 738 | 2,107
Related tax expense | (251) | (716)
Less: reclassification adjustment for gains realized in income |  | (1,871)
Related tax expense |  | 636
Net effect on other comprehensive income | 487 | 156
Total comprehensive income | $ 5,301 | $ 1,820

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