Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Schedule Of Equity Method Investments [Line Items]
Non-current assets	$ 67	[1]	$ 399	[2]
Total assets	5,381	[1]	8,310	[2]
Current liabilities (including current portion of long-term debt)	9,370	[1]	11,085	[2]
Non-current liabilities	54	[1]	65	[2]
Stockholders' deficit	(4,043)	[1]	(2,840)	[2]
Total liabilities and stockholders' deficit	5,381	[1]	8,310	[2]
Total carrying value			775	[2]
Cash and Cash Equivalents
Schedule Of Equity Method Investments [Line Items]
Current assets	4,514	[1]	5,909	[2]
Other Current Assets
Schedule Of Equity Method Investments [Line Items]
Current assets	800	[1]	2,002	[2]
Long-term Debt
Schedule Of Equity Method Investments [Line Items]
Non-current liabilities	$ 0	[1]	$ 0	[2]

[1] Includes (Actua voting ownership): Acquirgy (25%))

[2] Includes (Actua voting ownership): Acquirgy, Inc. (“Acquirgy”) (25%) and CIML (38%)