Basic and Diluted Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

	Three months ended March 31
	2013		2012
Numerator:
Net income	$	194,801	$	532,384
Denominator:
Denominator for basic earnings per
share--weighted average shares		12,620,000		12,512,000
Dilutive effect of employee stock options
and other warrants		88,000		121,000
Denominator for diluted earnings per
share--adjusted weighted average shares		12,708,000		12,633,000
Basic earnings per share	$	0.02	$	0.04
Diluted earnings per share	$	0.02	$	0.04