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Note 6. Income taxes
3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]  
Income taxes

We recognized income tax expense of $50,010 and $152,000 during the three-month periods ended March 31, 2014 and 2013, respectively, based on our projections of future profitability.  The variation between the company’s annual effective rate and the Unites States statutory rate of 34% is primarily due to state income taxes, foreign income taxes, the effects of stock compensation, and disallowed interest expense.