Results of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]
Revenue									$ 89,958	[1]	$ 176,481	[2]	$ 243,314	[3]
Net income (loss)									(20,159)	[1]	(31,976)	[2]	(29,402)	[3]
Equity income (loss) excluding impairments and amortization of intangible assets									(7,518)	[1]	(9,946)	[2]	(10,452)	[3]
Impairment charge of GoIndustry													(2,914)
Amortization of intangible assets									(1,154)	[1]	(2,018)	[2]	(2,656)	[3]
Total equity income (loss)	(1,526)	(1,607)	(3,236)	(2,303)	(1,958)	(3,245)	(3,185)	(3,576)	(8,672)	[1]	(11,964)	[2]	(16,022)	[3]
GoIndustry
Schedule of Equity Method Investments [Line Items]
Impairment charge of GoIndustry													$ (2,914)	[3]

[1] Includes Acquirgy, CIML (to July 11, 2012, the date of consolidation), Freeborders, GoIndustry (to July 5, 2012, the date of disposition), SeaPass (to December 27, 2012, the date of consolidation), and WhiteFence.

[2] Includes Acquirgy, CIML, ClickEquations (to June 14, 2011, the date of its disposition), Freeborders, GoIndustry, Metastorm (to February 17, 2011, the date of disposition), SeaPass, StarCite (to December 30, 2011, the date of its disposition) and WhiteFence.

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