Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock	Additional Paid in Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2017	$ 9,773	$ 36,573,888	$ (30,363,122)	$ 6,220,539
Balance, shares at Dec. 31, 2017	9,772,694
Public offering of common shares for cash, net of offering costs				447,000
Cumulative effect of change in accounting principle related to lease accounting			(142,027)	(142,027)
Shares issued as compensation	$ 6	$ 28,869		$ 28,875
Shares issued as compensation, shares	6,249
Stock-based compensation expense		468,247		468,247
Stock-based compensation expense, shares
Shares issued for revenue share	$ 100	$ 446,900		$ 447,000
Shares issued for revenue share, shares	100,000
Net income (loss)			(189,179)	(189,179)
Balance at Mar. 31, 2018	$ 9,879	37,517,904	$ (30,694,328)	6,833,455
Balance, shares at Mar. 31, 2018	9,878,943
Public offering of common shares for cash, net of offering costs	$ 1,667	8,162,807		8,164,474
Public offering of common shares for cash, net of offering costs, shares	1,666,669
Shares issued in connection with reverse split	$ 1	(1)
Shares issued in connection with reverse split, shares	908
Shares issued for stock options exercised	$ 2	4,918		4,920
Shares issued for stock options exercised, shares	2,002
Shares issued as compensation	$ 8	$ 89,937		$ 89,945
Shares issued as compensation, shares	8,336
Stock-based compensation expense		426,755		426,755
Stock-based compensation expense, shares
Net income (loss)			$ 280,509	$ 280,509
Balance at Jun. 30, 2018	$ 11,557	46,202,320	(30,413,819)	15,800,058
Balance, shares at Jun. 30, 2018	11,556,858
Balance at Dec. 31, 2018	$ 12,039	48,725,211	(30,278,805)	18,458,445
Balance, shares at Dec. 31, 2018	12,038,618
Cumulative effect of change in accounting principle related to lease accounting			(3,229)	(3,229)
Shares issued for restricted stock awards	$ 130	(130)
Shares issued for restricted stock awards, shares	130,001
Shares issued for stock options exercised	$ 102	343,683		343,785
Shares issued for stock options exercised, shares	101,878
Shares issued as compensation	$ 8	$ 106,026		$ 106,034
Shares issued as compensation, shares	8,336
Stock-based compensation expense		530,312		530,312
Stock-based compensation expense, shares
Net income (loss)			$ 6,529	$ 6,529
Balance at Mar. 31, 2019	$ 12,279	49,705,102	(30,275,505)	19,441,876
Balance, shares at Mar. 31, 2019	12,278,833
Public offering of common shares for cash, net of offering costs	$ 1,769	21,302,057		21,303,826
Public offering of common shares for cash, net of offering costs, shares	1,769,275
Shares issued for stock options exercised	$ 61	214,253		214,314
Shares issued for stock options exercised, shares	60,295
Shares issued as compensation	$ 8	$ 135,035		$ 135,043
Shares issued as compensation, shares	8,336
Stock-based compensation expense		408,087		408,087
Stock-based compensation expense, shares
Net income (loss)			$ 406,617	$ 406,617
Balance at Jun. 30, 2019	$ 14,117	$ 71,764,534	$ (29,868,888)	$ 41,909,763
Balance, shares at Jun. 30, 2019	14,116,739