Summary of Significant Accounting Policies - (Details 2) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Concentration of Credit Risk
Advertising Expense	$ 7,900	$ 2,800
Sales Revenue, Goods, Net	149,267	73,057
International
Concentration of Credit Risk
Sales Revenue, Goods, Net	$ 9,400	$ 500
Supplier Concentration Risk
Concentration of Credit Risk
Concentration risk (as a percent)	50.00%	47.00%
Sales \| Customer A
Concentration of Credit Risk
Concentration risk (as a percent)	18.00%	11.00%
Accounts receivable \| Customers and customer group \| Customer A
Concentration of Credit Risk
Concentration risk (as a percent)	29.00%	25.00%
Accounts receivable \| Customers and customer group \| Customer B
Concentration of Credit Risk
Concentration risk (as a percent)	10.00%

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
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No definition available.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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