Summary of Financial Information for Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Costs & expenses	$ 53,000	$ 50,775	[1]	$ 161,276	$ 149,172	[2]
Other Reconciling Items
Segment Reporting Information [Line Items]
Costs & expenses	6,932	6,930	[1]	21,100	19,661	[2]
Reclassification Adjustment | Other Reconciling Items
Segment Reporting Information [Line Items]
Costs & expenses		(1,000)			(3,200)
Outsourced Portals | Total segment operating income
Segment Reporting Information [Line Items]
Costs & expenses	44,703	42,529	[1]	136,201	125,916	[2]
Outsourced Portals | Reclassification Adjustment | Total segment operating income
Segment Reporting Information [Line Items]
Increase in costs & expenses					3,100
Other Software & Services | Total segment operating income
Segment Reporting Information [Line Items]
Costs & expenses	$ 1,365	$ 1,316	[1]	$ 3,975	3,595	[2]
Other Software & Services | Reclassification Adjustment | Total segment operating income
Segment Reporting Information [Line Items]
Increase in costs & expenses					$ 100

[1] The Company reclassified certain income statement employee benefit-related expenses for the three-month period ended September 30, 2014 to conform to the 2015 presentation. The reclassification resulted in a reduction of costs & expenses in Other Reconciling Items of $1.0 million and a corresponding increase in costs & expenses in Outsourced Portals. See Note 1.

[2] The Company reclassified certain income statement employee benefit-related expenses for the nine-month period ended September 30, 2014 to conform to the 2015 presentation. The reclassification resulted in a reduction of costs & expenses in Other Reconciling Items of $3.2 million and corresponding increases in costs & expenses of $3.1 million and $0.1 million, respectively, in Outsourced Portals and Other Software & Services. See Note 1.