Outsourced Government Contracts - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended																					12 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2012 Customer Contract	Dec. 31, 2012 Virginia Interactive, LLC	Dec. 31, 2012 Virginia Interactive, LLC Transition Period Term	Jun. 30, 2012 State of Arizona Extended Term	Jun. 30, 2012 State of Kansas Extended Term	Mar. 31, 2013 State of Kansas Extended Term Subsequent Event	Jun. 30, 2012 State of New Jersey Extended Term	Jun. 30, 2012 State of West Virginia Extended Term	Jun. 30, 2012 State of Maine Extended Term	Jun. 30, 2012 State of Maine Renewal Term Contract	Sep. 30, 2012 State of Hawaii Extended Term	Sep. 30, 2012 Utah Extended Term	Sep. 30, 2012 State of Rhode Island Extended Term	Mar. 31, 2012 State of Alabama Renewal Term Contract	Mar. 31, 2012 State of Alabama New Contract	Mar. 31, 2012 Kentucky Extended Term	Mar. 31, 2012 State of Iowa Extended Term	Dec. 31, 2012 Commonwealth Of Pennsylvania Renewal Term	Dec. 31, 2012 Commonwealth Of Pennsylvania New Contract	Dec. 31, 2012 State of Oklahoma Extended Term	Mar. 31, 2013 State of Vermont Extended Term Subsequent Event	Mar. 31, 2013 State of Nebraska Extended Term Subsequent Event	Mar. 31, 2013 US Department of Transportation, Federal Motor Carrier Safety Administration Renewal Term Subsequent Event Contract	Mar. 31, 2013 US Department of Transportation, Federal Motor Carrier Safety Administration Third Extended Term Subsequent Event	Dec. 31, 2012 Federal Election Commission	Dec. 31, 2012 Federal Election Commission Renewal Term	Mar. 31, 2013 Federal Election Commission Renewal Term Subsequent Event	Dec. 31, 2012 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
Percentage of total consolidated revenues related to contracts that can be terminated by the other party without cause on period of notice																												58.00%
Performance bond commitments	$ 5.3
Term of contract				1 year	1 year	1 year	1 year	1 year	2 years	2 years	3 years	3 years		1 year	3 years	1 year	6 months	5 years	5 years	1 year	3 months	2 years	1 year	1 year		3 months	2 months
Number of contract renewal options										2				2									4
Description of contract term			Expired - in transition period ending 8/31/2013										Extended through the first quarter of 2013
Number of federal agencies the Company currently has contracts with to provide outsourced services	2
Contract expiration date		Aug. 31, 2012																						Feb. 16, 2014	Apr. 30, 2013
Number of outsourced portal services or software development and services contracts with expiration date within a 12-month period	14
Percentage of total consolidated revenues related to contracts with expiration dates within a 12-month period	22.00%
Percentage of total consolidated revenues		3.00%