Commitments and Contingencies - Contingencies (Details)	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Indemnification claims	$ 0
Contingent liabilities	0
IBEW
Loss Contingencies [Line Items]
Legal reserves	$ 0

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.

No definition available.

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