Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Schedule Of Equity Method Investments [Line Items]
Non-current assets	$ 351	[1]	$ 399	[1]
Total assets	4,681	[1]	8,310	[1]
Current liabilities	8,490	[1]	11,085	[1]
Non-current liabilities	137	[1]	65	[1]
Stockholders' deficit	(3,946)	[1]	(2,840)	[1]
Total liabilities and stockholders' deficit	4,681	[1]	8,310	[1]
Total carrying value	464	[1]	775	[1]
Cash and Cash Equivalents
Schedule Of Equity Method Investments [Line Items]
Current assets	2,753	[1]	5,909	[1]
Other Current Assets
Schedule Of Equity Method Investments [Line Items]
Current assets	1,577	[1]	2,002	[1]
Long-term Debt
Schedule Of Equity Method Investments [Line Items]
Non-current liabilities	$ 0	[1]

[1] Includes (ICG voting ownership): Acquirgy (25%) and CIML (38%).