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Significant Customers - Schedules of Concentration of Risk, by Risk Factor of Sales Revenue and Accounts Receivable (Details)	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Concentration risk, percentage	10.00%
Sales Revenues [Member]
Concentration risk, percentage	16.30%		24.60%	16.00%
Sales Revenues [Member] | Customer A [Member]
Concentration risk, percentage	16.30%		14.20%	16.00%
Sales Revenues [Member] | Customer B [Member]
Concentration risk, percentage	0.00%	[1]	10.40%	0.00%	[1]
Accounts Receivable [Member]
Concentration risk, percentage	25.10%		34.00%
Accounts Receivable [Member] | Customer A [Member]
Concentration risk, percentage	13.40%		18.00%
Accounts Receivable [Member] | Customer B [Member]
Concentration risk, percentage	11.70%		16.00%
[1] Sales didn't exceed 10% of the revenue

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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=64851502&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=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

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- Details

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- Details

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- Details

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- Details

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