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Stockholders' Equity - Common Stock Reserved for Future Issuance (Details) shares in Thousands	Jun. 30, 2018 shares
Class of Stock
Common stock reserved for future issuance (in shares)	16,518
Stock options
Class of Stock
Common stock reserved for future issuance (in shares)	3,333
Restricted stock units
Class of Stock
Common stock reserved for future issuance (in shares)	2,705
ESPP
Class of Stock
Common stock reserved for future issuance (in shares)	1,801
Common stock warrants outstanding
Class of Stock
Common stock reserved for future issuance (in shares)	13
2014 Plan
Class of Stock
Common stock reserved for future issuance (in shares)	8,666

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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