v3.4.0.3

Commitments and Contingencies - Universal Services Fund Liability (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jul. 31, 2013	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Jun. 30, 2015	Jun. 12, 2015	Sep. 30, 2014	Dec. 31, 2012
Loss Contingencies [Line Items]
Accrued federal fees		$ 5,885		$ 5,684
Debt, gross		36,473
FCC Enforcement Bureau Civil Penalty
Loss Contingencies [Line Items]
Accrued liability							$ 2,000
General and administrative expense
Loss Contingencies [Line Items]
Interest and penalty expense		100	$ 100
2003 through 2012 | USF obligations
Loss Contingencies [Line Items]
Accrued federal fees								$ 8,100
2003 through 2012 | Undisputed portion | USF obligations
Loss Contingencies [Line Items]
Accrued federal fees								4,700
Payments	$ 600
2003 through 2012 | Disputed portion | USF obligations
Loss Contingencies [Line Items]
Accrued federal fees		4,900		4,900				3,400
2003 through 2007 | Disputed portion | USF obligations
Loss Contingencies [Line Items]
Accrued federal fees								$ 800
FCC Enforcement Bureau Civil Penalty
Loss Contingencies [Line Items]
Debt, gross						$ 2,000
Promissory Note | USF obligations
Loss Contingencies [Line Items]
Debt, gross	4,100
Notes Payable
Loss Contingencies [Line Items]
Debt, gross		23,973		25,626
Notes Payable | FCC Enforcement Bureau Civil Penalty
Loss Contingencies [Line Items]
Debt, gross		1,500		1,667	$ 2,000
Notes Payable | Promissory Note
Loss Contingencies [Line Items]
Debt, gross	$ 4,100	1,100		1,500
Notes Payable | Promissory Note | USF obligations
Loss Contingencies [Line Items]
Debt, gross		$ 1,100		$ 1,500

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- Definition

Accrued Federal Fees

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- Definition

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+ References

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 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The amount of cash paid during the current period for fees which are not defined elsewhere in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

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