Summary of Financial Information for Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Revenues	$ 53,206	$ 46,689	$ 153,931	$ 135,846
Costs & expenses	41,091	34,460	118,676	103,355
Amortization of acquisition-related intangible assets	53	81	214	242
Depreciation & amortization	1,606	1,167	4,236	3,361
Operating income	10,456	10,981	30,805	28,888
Outsourced Portals
Segment Reporting Information [Line Items]
Revenues	50,198	43,850	144,952	127,988
Costs & expenses	34,030	28,729	97,052	83,762
Amortization of acquisition-related intangible assets	53	81	214	242
Depreciation & amortization	1,532	1,085	4,013	3,119
Operating income	14,583	13,955	43,673	40,865
Other Software & Services
Segment Reporting Information [Line Items]
Revenues	3,008	2,839	8,979	7,858
Costs & expenses	1,219	1,105	3,293	3,472
Depreciation & amortization	16	14	44	44
Operating income	1,773	1,720	5,642	4,342
Other Reconciling Items
Segment Reporting Information [Line Items]
Costs & expenses	5,842	4,626	18,331	16,121
Depreciation & amortization	58	68	179	198
Operating income	$ (5,900)	$ (4,694)	$ (18,510)	$ (16,319)