Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended											2 Months Ended	12 Months Ended			1 Months Ended
	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 GovDelivery	Dec. 31, 2012 Procurian	Dec. 31, 2010 Procurian Customer	Dec. 31, 2012 Zurich	Dec. 31, 2010 Hertz Corporation	Dec. 31, 2010 Kimberly Clark Corp	Dec. 31, 2012 MSDSonline	Feb. 28, 2013 Subsequent Event Zurich	Dec. 31, 2010 GoIndustry		Dec. 31, 2011 GoIndustry	Dec. 27, 2012 Minimum	Dec. 31, 2012 Minimum	Dec. 31, 2012 Maximum
Significant Accounting Policies [Line Items]
Percentage of direct or indirect voting interest owned	More than 50%
Equity method investment, ownership percentage															26.00%		20.00%	50.00%
Impairment charges				$ 2,914,000									$ 2,914,000	[1]
Intangible assets impairment charges					400,000
Goodwill impairment charges	304,000				300,000
Gain on contingent consideration write-off					700,000
Percentage of business acquisition above																50.00%
Period of operation available for MSDSonline		Two days
Number of sources of revenues											3
Contingent gains associated with outstanding escrows	100,000
Expiry period of contingent gains associated with outstanding escrows	2 years
Percentage of consolidated revenue								17.00%	11.00%	11.00%
Number of major customers							2
Accounts receivable including unbilled amounts of major customer								15,800,000
Unbilled accounts receivable of major customer								12,400,000
Collections from accounts receivable	12,402,000		5,458,000	6,544,000								(2,900,000)
Interest paid	600,000		500,000	300,000
Taxes paid	1,000,000		700,000	500,000
Taxes refunds received	100,000		6,500,000	5,300,000
Capital lease obligation incurred				600,000
Shares issued and exchanged to acquire additional ownership (shares)						1,091,942
Shares issued and exchanged to acquire additional ownership						$ 11,900,000

[1] Includes Acquirgy, CIML, ClickEquations, Freeborders, GoIndustry, Metastorm, SeaPass, StarCite and WhiteFence.