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Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
Revenue, Major Customer [Line Items]
Sales	$ 30,266	$ 26,001	$ 55,608		$ 47,358
Customer A [Member]
Revenue, Major Customer [Line Items]
Sales			12,979			[1]
Customer B [Member]
Revenue, Major Customer [Line Items]
Sales			8,397		9,667
Customer C [Member]
Revenue, Major Customer [Line Items]
Sales				[1]	$ 6,382
[1] Less than 10% of sales.

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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

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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