Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Taxes (Textual) [Abstract]        
Provision (benefit) for incomes taxes $ 130 $ (836) $ 191 $ (1,517)
Unrecognized tax benefits     127  
Period of change of unrecognized tax benefits     12 months  
Accrued interest and penalties $ 0   $ 0