Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Income Taxes [Abstract]    
Uncertain tax benefit positions that would reduce the effective income tax rate if recognized $ 256,000  
Effective income tax rate 36.50% 41.10%
Federal tax rate 35.00%  
Decrease in income tax rate due to the effect of foreign operations 2.60%