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Earnings (loss) per Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of basic and diluted earnings (loss) per share:
 
 
 
Year ended December 31
 
 
 
2015
 
2014
 
Numerator:
 
 
 
 
 
 
 
Net income (loss)
 
$
(1,224,667)
 
$
724,569
 
Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings (loss) per share – weighted average shares
 
 
12,870,000
 
 
12,666,000
 
 
 
 
 
 
 
 
 
Dilutive effect of employee stock options and other warrants
 
 
-
 
 
145,000
 
 
 
 
 
 
 
 
 
Denominator for diluted earnings (loss) per share – adjusted weighted average shares
 
 
12,870,000
 
 
12,811,000
 
 
 
 
 
 
 
 
 
Basic earnings (loss) per share
 
$
(0.10)
 
$
0.06
 
Diluted earnings (loss) per share
 
$
(0.10)
 
$
0.06