Summary of Financial Information for Reportable Segments (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Revenues	$ 45,052,839	$ 46,688,925	$ 46,423,929	$ 42,733,478	$ 40,819,096	$ 41,720,209	$ 40,737,948	$ 38,256,606	$ 180,899,171	$ 161,533,859	$ 132,885,729
Costs & expenses									137,492,611	127,458,921	104,883,474
Amortization of acquisition-related intangible assets	80,769	80,769	80,769	80,769	80,769	80,769	80,769	80,769	323,076	323,076	4,130,256
Depreciation & amortization	1,214,324	1,167,347	1,109,318	1,084,423	1,048,302	1,108,406	1,114,892	1,082,148	4,575,412	4,353,748	4,035,410
Nonrecurring gain on acquisition of business, net of tax											(2,184,255)
Operating income	9,620,512	10,979,966	9,442,917	8,464,677	8,032,180	9,247,948	6,551,651	5,566,335	38,508,072	29,398,114	22,020,844
Outsourced Portals
Segment Reporting Information [Line Items]
Revenues									170,276,434	155,175,664	128,573,539
Costs & expenses									110,994,019	101,557,474	81,427,580
Amortization of acquisition-related intangible assets									323,076	323,076	4,130,256
Depreciation & amortization									4,248,874	3,951,458	3,559,700
Nonrecurring gain on acquisition of business, net of tax											(2,184,255)
Operating income									54,710,465	49,343,656	41,640,258
Other Software & Services
Segment Reporting Information [Line Items]
Revenues									10,622,737	6,358,195	4,312,190
Costs & expenses									4,362,317	4,225,426	3,493,708
Depreciation & amortization									58,108	80,743	66,626
Operating income									6,202,312	2,052,026	751,856
Other Reconciling Items
Segment Reporting Information [Line Items]
Costs & expenses									22,136,275	21,676,021	19,962,186
Depreciation & amortization									268,430	321,547	409,084
Operating income									$ (22,404,705)	$ (21,997,568)	$ (20,371,270)