Concentrations of Significant Customers and Credit Risk (Details) - Customer concentration risk - customer	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Total revenue
Concentration Risk [Line Items]
Number of major customers (in customers)	1	1
Receivables
Concentration Risk [Line Items]
Number of major customers (in customers)	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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration