v3.8.0.1

Organization and Summary of Significant Accounting Policies Organization and Significant Accounting Policies - Segment Reporting and Geographic Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Reportable Segments	1
Revenue, Percentage	100.00%	100.00%	100.00%
Total Revenue	$ 718.5	$ 573.3	$ 402.0
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Percentage	17.00%	13.00%	14.00%
Total Revenue	$ 122.3	$ 75.8	$ 54.6
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue, Percentage	83.00%	87.00%	86.00%
Total Revenue	$ 596.2	$ 497.5	$ 347.4

X

- Definition

Revenue, Percentage

+ References

No definition available.

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- 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

No definition available.

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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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