CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenue	$ 166,593		$ 133,437		$ 109,213
Operating Expenses
Cost of revenue	105,762		81,281		67,785
Sales and marketing	21,920		13,466		10,367
General and administrative	38,805		29,228		28,345
Research and development	14,175		9,157		7,870
Amortization of intangible assets	5,590		1,412		1,357
Impairment related and other	1,548		753		1,182
Total operating expenses	187,800		135,297		116,906
Operating income (loss)	(21,207)		(1,860)		(7,693)
Other income (loss), net	57,879		42,624		74,147
Interest income	442		393		330
Interest expense	(526)		(577)		(366)
Income (loss) from continuing operations before income taxes and equity loss	36,588		40,580		66,418
Income tax benefit (expense)	(1,336)		4,287		(362)
Equity loss	(8,672)	[1]	(11,964)	[2]	(16,022)	[3]
Income (loss) from continuing operations	26,580		32,903		50,034
Income (loss) from discontinued operations, including gain on sale	(2,999)		(3,102)		(2,126)
Net (loss)	23,581		29,801		47,908
Less: Net income attributable to the noncontrolling interest	592		2,235		1,319
Net income (loss)	22,989		27,566		46,589
Amounts attributable to ICG Group, Inc.:
Net income (loss) from continuing operations	26,212		30,013		48,254
Net income (loss) from discontinued operations	(3,223)		(2,447)		(1,665)
Net income (loss)	22,989		27,566		46,589
Basic income (loss) per share attributable to ICG Group, Inc.:
Income (loss) from continuing operations	$ 0.73		$ 0.82		$ 1.33
Income (loss) on discontinued operations	$ (0.09)		$ (0.07)		$ (0.05)
Net income (loss)	$ 0.64		$ 0.75		$ 1.28
Shares used in computation of basic income (loss) per share	35,890		36,656		36,427
Diluted income (loss) per share attributable to ICG Group, Inc.:
Income (loss) from continuing operations	$ 0.72		$ 0.80		$ 1.30
Income (loss) on discontinued operations	$ (0.09)		$ (0.06)		$ (0.04)
Net income (loss)	$ 0.63		$ 0.74		$ 1.26
Shares used in computation of diluted income (loss) per share	36,543		37,460		37,064
Net income (loss)	23,581		29,801		47,908
Other comprehensive income (loss)
Unrealized holding gains (losses) in marketable securities	1,552				(4,055)
Reclassification adjustments/realized net (gains) loss on marketable securities	(1,552)				(67,115)
Other accumulated other comprehensive income (loss)	(34)		20		26
Comprehensive income (loss)	23,547		29,821		(23,236)
Less: Comprehensive income attributable to the noncontrolling interest	558		2,255		1,318
Comprehensive income (loss) attributable to ICG Group, Inc.	$ 22,989		$ 27,566		$ (24,554)

[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.