Basic and Diluted Earnings per Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Net income	$ 287,496	$ 49,158	$ 922,457	$ 727,799
Denominator:
Denominator for basic earnings per share-weighted average shares	12,480,000	12,416,000	12,499,000	12,436,000
Dilutive effect of employee stock options and other warrants	156,000	0	158,000	0
Denominator for diluted earnings per share-adjusted weighted average shares	12,636,000	12,416,000	12,657,000	12,436,000
Basic earnings per share (in dollars per share)	$ 0.02	$ 0.00	$ 0.07	$ 0.06
Diluted earnings per share (in dollars per share)	$ 0.02	$ 0.00	$ 0.07	$ 0.06