Commitments and Contingencies - Schedule of Significant Customers Accounts Receivable, Concentration of Credit Risk (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Concentration Risk [Line Items]
Amounts due from significant customers	$ 69,967	$ 89,336
Subsidiaries of AT&T Inc.
Concentration Risk [Line Items]
Amounts due from significant customers	53,242	70,426
DIRECTV
Concentration Risk [Line Items]
Amounts due from significant customers	11,941	10,699
Alcatel-Lucent
Concentration Risk [Line Items]
Amounts due from significant customers	$ 4,784	$ 8,211

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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 210.5-02.3)

-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 03

-Paragraph 3

-Subparagraph a, b

-Article 5

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