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Major Customers (Details) - customer	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Sales Revenue, Goods, Net
Concentration Risk [Line Items]
Number of customers	1	1	1	1
Concentration risk (as a percent) (more than for 10.0%)	10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk | Sales Revenue, Goods, Net
Concentration Risk [Line Items]
Number of customers	5	5,000,000	5	5,000,000
Concentration risk (as a percent) (more than for 10.0%)	41.00%	34.40%	39.00%	32.90%
Credit Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Number of customers			5
Concentration risk (as a percent) (more than for 10.0%)			39.60%	32.00%

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- Definition

The number of major customers who have a combined sales and accounts receivable concentration of greater than 10% and is separately disclosed.

+ References

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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=6927468&loc=d3e6351-108592



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



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-Publisher FASB



-Name Accounting Standards Codification



-Topic 275



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-Name Accounting Standards Codification



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-Section 50



-Paragraph 21



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