Results of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Schedule Of Equity Method Investments [Line Items]
Revenue									$ 48,316	[1]	$ 89,958	[2]	$ 176,481	[3]
Net income (loss)									(9,238)	[1]	(20,159)	[2]	(31,976)	[3]
Equity income (loss) excluding impairments and amortization of intangible assets									(2,798)	[1]	(7,518)	[2]	(9,946)	[3]
Amortization of intangible assets									(165)	[1]	(1,154)	[2]	(2,018)	[3]
Total equity income (loss)	$ (1,044)	$ (295)	$ (923)	$ (701)	$ (1,526)	$ (1,607)	$ (3,236)	$ (2,303)	$ (2,963)	[1]	$ (8,672)	[2]	$ (11,964)	[3]

[1] Includes Acquirgy, CIML, Freeborders (through October 18, 2013, the date of disposition) and WhiteFence (through October 28, 2013, the date of disposition).

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

[3] Includes Acquirgy, Bolt, CIML, ClickEquations (through June 14, 2011, the date of disposition), Freeborders, GoIndustry, Metastorm (through February 17, 2011, the date of disposition), StarCite (through December 30, 2011, the date of disposition) and WhiteFence.