6. (Loss) Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Loss Earnings Per Share
Basic net income (loss)	$ (5,882)	$ 88,718	$ (39,158)	$ 57,102
Basic shares	11,201,760	11,201,760	11,201,760	11,201,760
Basic net income (loss) per common share	$ .00	$ 0.01	$ .00	$ 0.01
Effect of dilutive stock options	0	342,996	0	306,671
Diluted net income (loss)	$ (5,882)	$ 88,718	$ (39,158)	$ 57,102
Diluted shares	11,201,760	11,544,756	11,201,760	11,508,431
Diluted earnings per share	$ .00	$ .01	$ .00	$ .00