Consolidated Statements of Operations - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Subscription revenue	$ 13,416,035		$ 10,194,375	$ 24,546,813	$ 20,140,420
Cost of sales of subscription revenue	2,134,526		1,974,242	4,319,966	3,890,587
Gross profit	11,281,509		8,220,133	20,226,847	16,249,833
Operating expenses:
Sales and marketing	3,460,773		2,541,207	6,113,787	5,093,227
Product development	889,687		814,025	1,752,441	1,577,128
General and administrative expenses	3,382,146		3,202,151	6,703,222	6,239,593
Total operating expenses	7,732,606		6,557,383	14,569,450	12,909,948
Other income (expenses):
Interest and other income	8,505		6,071	15,594	9,129
Interest expense	(28,283)		(28,283)	(56,496)	(56,496)
Total other income (expenses)	(19,778)		(22,212)	(40,902)	(47,367)
Income (loss) before income taxes and discontinued operations	3,529,125		1,640,538	5,616,495	3,292,518
Income tax expense	601,000		726,000	1,395,000	1,331,000
Income from continuing operations	2,928,125		914,538	4,221,495	1,961,518
Income (loss) from discontinued operations, net of income tax expense (benefit) of $755,000, $(82,000), $708,000 and $(317,000) respectively	1,138,434		(92,739)	1,067,080	(470,617)
Net income	$ 4,066,559		$ 821,799	$ 5,288,575	$ 1,490,901
Per share amounts - basic:
Income from continuing operations	$ 0.26		$ 0.08	$ 0.38	$ 0.18
Net income	0.36		0.07	0.47	0.14
Per share amounts - diluted:
Income from continuing operations	0.25		0.08	0.36	0.17
Net income	$ 0.35		$ 0.07	$ 0.45	$ 0.13
Weighted average number of common shares outstanding:
Basic	11,228,905		11,101,665	11,209,900	11,040,530
Diluted	11,689,883		11,531,030	11,684,857	11,509,489
Dividends declared per common share	$ 0.14	$ 0.14	$ 0.11	$ 0.28	$ 0.11