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4. Net Income (Loss) Per Share (Details 1)	3 Months Ended		9 Months Ended
4. Net Income (Loss) Per Share (Details 1)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income Loss Per Share Details 1
Anti-dilutive options	9,720,813	14,799,270	14,862,274	9,720,813