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Segment And Geographic Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments | segment									1
Revenue	$ 25,722	$ 25,118	$ 20,747	$ 19,127	$ 36,281	$ 13,917	$ 24,939	$ 17,645	$ 90,714	$ 92,782	$ 60,594
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									50,800	68,800	34,800
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									20,000	9,000	10,100
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 19,900	$ 15,000	$ 15,700

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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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