XML 34 R20.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Common Stock | 12 Months Ended
--- | ---
Dec. 31, 2017
Common Stock |
Common Stock | 12. Common Stock As of December 31, 2017, the Company had 150,000,000 shares of Common Stock authorized for issuance, $0.001 par value per share, with 23,645,247 shares issued and outstanding. The voting, dividend and liquidation rights of holders of Common Stock are subject to and qualified by the rights, powers and preferences of the holders of any outstanding Preferred Stock. The Company's Common Stock has the following characteristics: Voting The holders of Common Stock are entitled to one vote for each share of Common Stock held at all meetings of stockholders and written actions in lieu of meetings. Dividends The holders of Common Stock are entitled to receive dividends, if and when declared by the board of directors. Cash dividends may not be declared or paid to holders of Common Stock until paid on each series of outstanding Preferred Stock in accordance with their respective terms. No dividends have been declared or paid from the Company's inception through December 31, 2017. Liquidation In the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company, the holders of Common Stock are entitled to share ratably in the Company's assets available for distribution to stockholders, subject to any preferential or other rights of any then-outstanding Preferred Stock. Reserved for Future Issuance The Company has reserved for future issuance the following shares of Common Stock:
|  | As of December 31, |
|  | 2017 |  | 2016 |
Warrants for the purchase of Common Stock |  |  | 24,566 |  |  | 24,566 |
Options to purchase Common Stock |  |  | 3,669,791 |  |  | 2,939,968 |
Employee Stock Purchase Plan |  |  | 523,659 |  |  | 335,484 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  |  | 4,218,016 |  |  | 3,300,018 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
Name: | us-gaap_StockholdersEquityNoteDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration