Summary of Financial Information for Reportable Segments (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 71,158,615	$ 75,046,282	$ 75,812,776	$ 70,358,623	$ 66,017,902	$ 69,527,198	$ 71,153,786	$ 65,397,685	$ 292,376,296	$ 272,096,571	$ 249,278,665
Costs & expenses									216,696,301	199,905,482	188,386,825
Depreciation & amortization	$ 1,673,405	$ 2,116,319	$ 2,303,571	$ 2,292,118	$ 2,357,854	$ 2,292,382	$ 2,277,048	$ 2,249,734	8,385,413	9,177,018	8,333,089
Operating income (loss) before income taxes									67,294,582	63,014,071	52,558,751
Total segment operating income | Outsourced Portals
Segment Reporting Information [Line Items]
Revenues									273,502,323	255,743,418	235,183,005
Costs & expenses									168,166,011	156,185,335	147,007,246
Depreciation & amortization									4,648,870	5,305,302	4,962,692
Operating income (loss) before income taxes									100,687,442	94,252,781	83,213,067
Total segment operating income | Other Software & Services
Segment Reporting Information [Line Items]
Revenues									18,873,973	16,353,153	14,095,660
Costs & expenses									5,431,967	4,783,606	4,498,233
Depreciation & amortization									47,015	36,999	53,475
Operating income (loss) before income taxes									13,394,991	11,532,548	9,543,952
Other Reconciling Items
Segment Reporting Information [Line Items]
Costs & expenses									43,098,323	38,936,541	36,881,346
Depreciation & amortization									3,689,528	3,834,717	3,316,922
Operating income (loss) before income taxes									$ (46,787,851)	$ (42,771,258)	$ (40,198,268)