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Changes in Accumulated Other Comprehensive Income by Component (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Abstract]    
Accumulated other comprehensive income - beginning of period $ 127 [1]  
Other comprehensive income before reclassfication 23 [1]  
Amounts reclassified from accumulated other comprehensive income 0 [1],[2],[3]  
Net current period change in other comprehensive income 23 [1] (173)
Accumulated other comprehensive income - end of period $ 150 [1]  
[1] All amounts are net of tax.
[2] For the three months ended March 31, 2013, there were no realized gains or losses from the sale of available for sale securities. Refer to Note 4 herein for further information.
[3] Realized gains and losses are recorded pre-tax in the other income - investment and interest caption on our consolidated statements of comprehensive income.