Number of joint ventures.

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- Definition

Related party transaction license income.

+ References

No definition available.

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- Definition

The amount of assets reported by an equity method investment of the entity.

+ References

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-Publisher FASB
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- Definition

The amount of liabilities reported by an equity method investment of the entity.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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.

+ References

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

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

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-Publisher FASB
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-Topic 210
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-Paragraph 1
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

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Joint Venture and Related Party Transactions - Additional Information (Detail)	1 Months Ended	12 Months Ended			55 Months Ended
	Jun. 30, 2009 JointVenture	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jan. 31, 2014 USD ($)
Related Party Transaction [Line Items]
Number of joint venture agreements \| JointVenture	2
License agreement payment					$ 18,750,000
TVaura LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	51.00%
Investment in joint venture		$ 0	$ 0
Joint ventures revenue or expenses		0	0	$ 0
Joint ventures assets		0	0
Joint ventures liability		0	0
TVaura Mobile LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	49.00%
Investment in joint venture		0	0
Joint ventures revenue or expenses		0	0	$ 0
Joint ventures assets		0	0
Joint ventures liability		$ 0	$ 0