Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

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Income Taxes (Details Textual) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Income Taxes (Textual) [Abstract]    
Amount of gross liability for unrecognized tax benefits in non-current liabilities $ 1,650 $ 1,739
Unrecognized tax benefits that would impact effective tax rate, if recognized 844  
Decrease in unrecognized tax benefits 400  
Unrecognized tax benefits accrued interest and penalties $ 620 $ 642