CONDENSED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONDENSED STATEMENTS OF OPERATIONS [Abstract]
Operating revenues	$ 4,248,179	$ 3,852,003	$ 8,381,081	$ 7,560,754
Operating expenses:
Data and product costs	1,573,686	1,515,469	3,201,472	3,041,797
Selling, general and administrative expenses	2,190,382	2,394,266	4,391,174	4,809,524
Depreciation and amortization	66,503	53,693	131,016	107,805
Total operating expenses	3,830,571	3,963,428	7,723,662	7,959,126
Income (loss) from operations	417,608	(111,425)	657,419	(398,372)
Other income	246	3,417	3,494	26,101
Income (loss) before income taxes	417,854	(108,008)	660,913	(372,271)
(Provision for) benefit from income taxes	(95,146)	136,929	(150,491)	202,844
Net income (loss)	$ 322,708	$ 28,921	$ 510,422	$ (169,427)
Net income per share - Basic (in dollars per share)	$ 0.03	$ 0.00	$ 0.05	$ (0.02)
Net income per share - Diluted (in dollars per share)	$ 0.03	$ 0.00	$ 0.05	$ (0.02)
Weighted average number of common shares outstanding - Basic (in shares)	10,722,401	10,722,401	10,722,401	10,722,401
Weighted average number of common shares outstanding - Diluted (in shares)	10,792,744	10,722,401	10,779,726	10,722,401