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Concentration and Major Customers and Suppliers (Details) | 12 Months Ended
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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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- 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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