Consolidated Statements of Operations - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Subscription revenue	$ 11,954,591			$ 11,261,831			$ 34,963,042	$ 34,059,230
Other revenue	137,178			275,344			963,901	1,916,367
Total revenue	12,091,769			11,537,175			35,926,943	35,975,597
Cost of sales	2,944,607			2,925,212			9,527,037	7,881,536
Gross profit	9,147,162			8,611,963			26,399,906	28,094,061
Operating expenses:
Sales and marketing	3,189,695			2,890,739			9,622,811	8,583,395
Product development	1,194,925			1,001,072			3,467,223	3,021,726
General and administrative expenses	3,987,280			3,933,992			11,820,321	11,555,444
Total operating expenses	8,371,900			7,825,803			24,910,355	23,160,565
Other income (expenses):
Interest and other income	979			5,214			2,681	19,380
Interest expense	(32,511)			(28,709)			(97,117)	(78,250)
Total other income (expenses)	(31,532)			(23,495)			(94,436)	(58,870)
Income before income taxes	743,730			762,665			1,395,115	4,874,626
Income tax expense	286,000			297,000			5,000	1,864,000
Net income	$ 457,730			$ 465,665			$ 1,390,115	$ 3,010,626
Net income per common share:
Basic	$ 0.04			$ 0.04			$ 0.12	$ 0.27
Diluted	$ 0.04			$ 0.04			$ 0.12	$ 0.26
Weighted average number of common shares outstanding:
Basic	11,499,832			11,320,904			11,487,280	11,308,833
Diluted	11,774,684			11,764,210			11,758,368	11,745,499
Dividends declared per common share	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.51	$ 0.51