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Concentration of Credit Risk - Schedule of Concentration of Sales and Accounts Receivable (Details) - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net Revenue
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Net Revenue | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	21.00%	20.00%	15.00%
Net Revenue | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	31.00%	28.00%
Net Revenue | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	8.00%	1.00%
Trade Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%
Trade Accounts Receivable | Customer A
Concentration Risk [Line Items]
Concentration risk percentage	19.00%	13.00%
Trade Accounts Receivable | Customer B
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	18.00%
Trade Accounts Receivable | Customer C
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	13.00%
Trade Accounts Receivable | Customer D
Concentration Risk [Line Items]
Concentration risk percentage	9.00%	16.00%

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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.

+ References

No definition available.

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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
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
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-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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