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6. Earnings Per Share (Details Narrative) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Earnings per share:        
Antidilutive common stock equivalents 7,900,000 5,700,000 7,400,000 5,300,000