This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Joint Ventures and Related Party Transactions - Additional Information (Detail) - USD ($)		3 Months Ended		9 Months Ended
	Jul. 01, 2009	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
TVaura LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	51.00%
Investment in joint venture		$ 0		$ 0		$ 0
Joint ventures revenue or expenses		0	$ 0	0	$ 0
TVaura Mobile LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	49.00%
Investment in joint venture		0		0		$ 0
Joint ventures revenue or expenses		$ 0	$ 0	$ 0	$ 0