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Accumulated Other Comprehensive Income (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance     $ 107  
Total other comprehensive income (loss) 4 1 (6) (54)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance 101   101  
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance 97 [1]   107 [1]  
Other comprehensive income before reclassifications 4 [1]   (6) [1]  
Amount reclassified from accumulated other comprehensive income    [1],[2]      [1],[2]  
Total other comprehensive income (loss) 4 [1]   (6) [1]  
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance $ 101 [1]   $ 101 [1]  
[1] All amounts are net of tax. Amounts in parentheses indicate a reduction of other comprehensive income.
[2] There no amounts reclassified out of other comprehensive income for the three and nine months ended September, 2013