The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

Reference 2: 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

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.12)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 9
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 11
-Article 7

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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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Investments Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2015	May. 31, 2014	Aug. 23, 2013
Schedule of Available-for-sale Securities [Line Items]
Carrying Value	$ 24,815				$ 30,060				$ 24,815	$ 30,060
Income (Loss) Recognized	$ (11,300)	$ (8,200)	$ 5,400	$ (2,100)	$ (2,700)	$ (4,800)	$ 2,900	$ (1,400)	$ (16,102)	$ (6,070)	$ (862)
iGo
Schedule of Available-for-sale Securities [Line Items]
Ownership					45.70%					45.70%				44.70%
API
Schedule of Available-for-sale Securities [Line Items]
Ownership													20.60%
Aviat
Schedule of Available-for-sale Securities [Line Items]
Ownership												12.90%
Traditional equity method \| Again Faster
Schedule of Available-for-sale Securities [Line Items]
Ownership	40.00%				40.00%				40.00%	40.00%
Carrying Value	$ 0				$ 3,105				$ 0	$ 3,105
Income (Loss) Recognized									$ (3,105)	$ (566)	(329)
Traditional equity method \| iGo
Schedule of Available-for-sale Securities [Line Items]
Ownership	45.70%				46.90%				45.70%	46.90%
Carrying Value	$ 2,861				$ 2,600				$ 2,861	$ 2,600
Income (Loss) Recognized									$ 261	$ (2,068)	(533)
Fair value option \| API
Schedule of Available-for-sale Securities [Line Items]
Ownership	20.60%				20.60%				20.60%	20.60%
Carrying Value	$ 15,779				$ 24,355				$ 15,779	$ 24,355
Income (Loss) Recognized									$ (8,576)	(3,436)	0
Fair value option \| Aviat
Schedule of Available-for-sale Securities [Line Items]
Ownership	12.90%								12.90%
Carrying Value	$ 6,175				$ 0				$ 6,175	0
Income (Loss) Recognized									$ (4,682)	$ 0	$ 0