Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Schedule Of Equity Method Investments [Line Items]
Cash and cash equivalents and Other current assets	$ 12,121	[1]	$ 11,268	[2]
Non-current assets	13,193	[1]	13,218	[2]
Total assets	31,331	[1]	30,058	[2]
Current liabilities	23,327	[1]	21,115	[2]
Non-current liabilities and Long-term debt	6,525	[1]	1,397	[2]
Stockholders’ deficit	(8,715)	[1]	(5,124)	[2]
Total liabilities and stockholders’ deficit	31,331	[1]	30,058	[2]
Total carrying value	14,390	[1]	13,333	[2]
Cash and Cash Equivalents
Schedule Of Equity Method Investments [Line Items]
Cash and cash equivalents and Other current assets	6,017	[1]	5,572	[2]
Long-term Debt
Schedule Of Equity Method Investments [Line Items]
Non-current liabilities and Long-term debt	$ 10,194	[1]	$ 12,670	[2]

[1] Includes (ICG voting ownership): Acquirgy (25%), CIML (38%), Freeborders (31%) and WhiteFence (36%).

[2] Includes (ICG voting ownership): Acquirgy (25%), Freeborders (31%) and WhiteFence (36%).