Equity and Cost Method Businesses - Summarized Financial Information Related to Companies Accounted for Under Equity Method of Accounting (Unaudited) (Detail) $ in Thousands	Dec. 31, 2014 USD ($)
Schedule Of Equity Method Investments [Line Items]
Cash and cash equivalents	$ 4,514
Other current assets	800
Non-current assets	67
Total assets	5,381
Current liabilities (including current portion of long-term debt)	9,370
Non-current liabilities	54
Long-term debt	0
Stockholders' deficit	(4,043)
Total liabilities and stockholders' deficit	5,381
Total carrying value	$ 0
Acquirgy
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	25.00%