Fair Value Measurements - Preferred Stock Warrant Liability (Details) $ / shares in Units, $ in Millions	Dec. 31, 2016 USD ($) $ / shares shares
Fair Value Measurements
Warrants to purchase shares of convertible preferred stock \| shares	342,011
Exercise price \| $ / shares	$ 7.3097
Warrants liability at fair value \| $	$ 0.8

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

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- References

No definition available.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

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