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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Joint Ventures and Related Party Transactions - Additional Information (Detail) $ in Thousands	1 Months Ended
	Mar. 31, 2012 JointVenture	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Related Party Transaction [Line Items]
Number of joint venture agreements \| JointVenture	2
TVaura LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	51.00%
Investment in joint venture		$ 0	$ 0
TVaura Mobile LLC [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	49.00%
Investment in joint venture		$ 0	$ 0