PROPERTY AND EQUIPMENT, NET - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 4.0	$ 3.8	$ 3.6

The current period expense charged against earnings on long-lived, physical assets used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives.

No definition available.

Name:	egov_DepreciationProduction
Namespace Prefix:	egov_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration