Outsourced Government Contracts - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended			9 Months Ended	3 Months Ended					9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended					3 Months Ended	9 Months Ended		3 Months Ended				9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013 Contract Customer	Sep. 30, 2013 Contract Customer	Sep. 30, 2013 Maximum	Sep. 30, 2013 NICUSA, AZ Division	Sep. 30, 2013 NICUSA, AZ Division	Sep. 30, 2013 NICUSA, AZ Division Extended Term	Sep. 30, 2013 NICUSA, AZ Division Renewal Term Contract	Sep. 30, 2013 Virginia Interactive, LLC	Sep. 30, 2013 Virginia Interactive, LLC	Jun. 30, 2013 New Mexico Interactive, LLC Extended Term	Jun. 30, 2013 Department of Game and Inland Fisheries	Jun. 30, 2013 Office of the Executive Secretary of the Supreme Court of Virginia	Mar. 31, 2013 State of Kansas Extended Term	Mar. 31, 2013 State of Nebraska Extended Term	Sep. 30, 2013 State of Vermont	Mar. 31, 2013 State of Vermont Extended Term	Sep. 30, 2013 State of Vermont Extended Term	Mar. 31, 2013 State of Rhode Island Extended Term	Sep. 30, 2013 State of Wisconsin	Sep. 30, 2013 State of Wisconsin Extended Term	Sep. 30, 2013 State of Idaho Extended Term	Sep. 30, 2013 Kentucky Extended Term	Sep. 30, 2013 State of New Jersey Extended Term	Sep. 30, 2013 State of Iowa Extended Term	Sep. 30, 2013 State of Iowa Extended Term	Sep. 30, 2013 State of Arizona Extended Term	Sep. 30, 2013 State of Maine Extended Term	Sep. 30, 2013 State of West Virginia Extended Term	Mar. 31, 2013 US Department of Transportation, Federal Motor Carrier Safety Administration Renewal Term Contract	Mar. 31, 2013 US Department of Transportation, Federal Motor Carrier Safety Administration Third Extended Term	Sep. 30, 2013 Federal Election Commission	Sep. 30, 2013 Outsourced State Portal Contracts Contract	Sep. 30, 2013 Outsourced State Portal Contracts Contract
Contracts [Line Items]
Number of portal outsourcing contracts that can be terminated by the other party without cause on period of notice																																15	15
Percentage of total consolidated revenues related to contracts that can be terminated by the other party without cause on period of notice																																59.00%	57.00%
Performance bond commitments	$ 6.1	$ 6.1
Term of contract						6 months	3 months			1 year			1 year	2 years	3 years	4 months	3 years	5 months	5 years	5 years	2 years	1 year	1 year	3 months	6 months	6 months	2 years	6 months	1 year	1 year
Contract renewal option											1	1
Option for the agency to extend the contract											6 months	12 months
Number of federal agencies the Company currently has contracts with to provide outsourced services	1	1
Number of contract renewal options							2																						4
Contract Expiration Date									Aug. 31, 2012																					Feb. 16, 2014	Jun. 30, 2013
Revenues from the FEC contract			1.00%
Number of outsourced portal services or software development and services contracts with expiration date within a 12-month period	15	15
Percentage of total consolidated revenues related to contracts with expiration dates within a 12-month period	39.00%	38.00%
Percentage of total consolidated revenues				1.00%	1.00%			2.00%	2.00%