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Net Income (Loss) per Share Applicable to Common Stockholders (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net income (loss)	$ (768,023)	$ (90,327)	$ 119,790	$ 11,839	$ (858,350)	$ 131,629
Denominator: Weighted average common shares outstanding used in computing net income (loss) per share:
Basic	6,009,383		5,999,159		6,011,670	5,969,666
Effect of dilutive stock options			272,348			234,223
Diluted	6,009,383		6,271,507		6,011,670	6,203,889
Net income (loss) per share applicable to common stockholders:
Basic	$ (0.13)		$ 0.02		$ (0.14)	$ 0.02
Diluted	$ (0.13)		$ 0.02		$ (0.14)	$ 0.02

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