Atrion Corporation (NASDAQ: ATRI) has released its operating results for the quarter and year ended December 31, 2012. The numbers were not so impressive, at least with respect to S&P Capital IQ estimates. Operating income declined by 8 percent for the quarter ended December 31, 2012 compared to the same quarter of the year before. In addition, operating income was down by 12 percent for the year ended December 31, 2012 compared to the same period of 2011..........