Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements Of Operations
Revenues	$ 35,328	$ 26,657	$ 69,282	$ 52,412
Operating expenses
Cost of revenue	21,775	17,643	42,765	34,325
Selling, general and administrative	12,115	10,788	23,702	21,222
Research and development	3,325	2,645	6,454	5,069
Amortization of intangible assets	338	339	675	678
Impairment related and other	82	96	119	168
Total operating expenses	37,635	31,511	73,715	61,462
Operating income (loss)	(2,307)	(4,854)	(4,433)	(9,050)
Other income (loss), net	1,612	24,627	26,558	64,923
Interest income	124	138	208	199
Interest expense	(186)	(25)	(332)	(69)
Income (loss) from continuing operations before income taxes, equity loss and noncontrolling interest	(757)	19,886	22,001	56,003
Income tax (expense) benefit	963	411	(1,977)	(205)
Equity loss	(3,185)	(4,580)	(6,761)	(10,915)
Income (loss) from continuing operations	(2,979)	15,717	13,263	44,883
Income (loss) from discontinued operations		223		201
Net income (loss)	(2,979)	15,940	13,263	45,084
Less: Net income attributable to the noncontrolling interest	254	179	606	552
Net income (loss) attributable to ICG Group, Inc.	(3,233)	15,761	12,657	44,532
Amounts attributable to ICG Group, Inc.:
Net income (loss) from continuing operations	(3,233)	15,570	12,657	44,372
Net income (loss) from discontinued operations		$ 191		$ 160
Basic income (loss) per share attributable to ICG Group, Inc.:
Income (loss) from continuing operations	$ (0.09)	$ 0.43	$ 0.34	$ 1.23
Income (loss) from discontinued operations
Net income (loss)	$ (0.09)	$ 0.43	$ 0.34	$ 1.23
Shares used in computation of basic income (loss) per share	36,961	36,346	36,953	36,326
Diluted income (loss) per share attributable to ICG Group, Inc.:
Income (loss) from continuing operations	$ (0.09)	$ 0.42	$ 0.33	$ 1.22
Income (loss) from discontinued operations		$ 0.01
Net income (loss)	$ (0.09)	$ 0.43	$ 0.33	$ 1.22
Shares used in computation of diluted income (loss) per share	36,961	37,074	37,976	36,518