Common Stock (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Reserved for Future Issuance

The Company has reserved the following shares of stock:

	As of December 31,
	2014		2013
Series A preferred stock		—		7,125,982
Series B preferred stock		—		1,134,462
Series A preferred stock warrants		—		30,708
Unvested restricted stock		125,027		163,353
Options to purchase common stock		1,904,107		1,347,824
Warrants to purchase common stock		899,340		333,799
		2,928,474		10,136,128