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Business Segments, Concentration of Credit Risk and Significant Customers - Significant Customers (Details) - customer	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Total revenues | Customer concentration risk | Customer A
Significant Customers
Percentage of concentration risk	54.00%	33.00%	50.00%	22.00%
Total revenues | Customer concentration risk | Customer B
Significant Customers
Percentage of concentration risk	19.00%	11.00%	22.00%	10.00%
Total revenues | Customer concentration risk | Customer C
Significant Customers
Percentage of concentration risk	11.00%	16.00%		12.00%
Total revenues | Customer concentration risk | Customer D
Significant Customers
Percentage of concentration risk		24.00%	11.00%	40.00%
Net accounts receivable | Credit concentration | Three customers
Significant Customers
Percentage of concentration risk			82.00%		94.00%
Number of customers	3		3		3

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- Definition

Represents the number of customers on whom the entity relies significantly giving rise to concentration of risk.

+ References

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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.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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