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Basic and Diluted Earnings (Loss) per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]
The following table sets forth the computation of basic and diluted earnings (loss) per share:
 
 
 
Three months ended March 31
 
 
 
2017
 
2016
 
Numerator:
 
 
 
 
 
 
 
Net income (loss)
 
$
523,793
 
$
(43,660)
 
 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings (loss) per share—weighted average shares
 
 
1,845,000
 
 
1,846,000
 
Dilutive effect of employee stock options and other warrants
 
 
1,000
 
 
-
 
 
 
 
 
 
 
 
 
Denominator for diluted earnings (loss) per share—adjusted weighted average shares
 
 
1,846,000
 
 
1,846,000
 
 
 
 
 
 
 
 
 
Basic earnings (loss) per share
 
$
0.28
 
$
(0.02)
 
Diluted earnings (loss) per share
 
$
0.28
 
$
(0.02)