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Concentration and Major Customers and Suppliers (Details)	12 Months Ended
	Dec. 31, 2016 Suppliers Customers	Dec. 31, 2015 Suppliers Customers	Dec. 31, 2014 Suppliers Customers
Concentration and major customers and suppliers (Textual)
Number of major suppliers | Suppliers	2	2	3
Number of customer contributed over 10% of total sales | Customers
Sales [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue	10.00%	10.00%	10.00%
Supplier One [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue	62.00%	61.00%	62.00%
Supplier Two [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue	8.00%	17.00%	14.00%
Supplier Three [Member]
Concentration and major customers and suppliers (Textual)
Percentage of revenue			9.00%

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Number of customer contributed over 10% of total sales.

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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

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