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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Summary of Common Stock Shares Activity

The following table summarizes common stock share activity for the years ended December 31, 2016 and 2015:



	Shares of Common Stock
Balance, December 31, 2014	8,512,103
Common stock issued through April 2015 Offering	5,376,622
Common stock issued through employee stock purchase plan	16,874
Balance, December 31, 2015	13,905,599
Common stock issued through Shelf Registration	10,696,456
Common stock issued through employee stock purchase plan	7,356
Balance, December 31, 2016	24,609,411

Common Stock Reserved For Future Issuances Table

The Company had reserved shares of common stock for future issuance as follows:



	December 31,
	2016			2015
Outstanding stock options	1,819,444			1,379,727
Outstanding Series C-1 Preferred warrants	14,033			14,033
Warrants to purchase common stock associated with June 2016 Public Offering	4,218,750			—
Warrants to purchase common stock associated with Loan Agreement	122,435			—
For possible future issuance under 2014 Equity Incentive Plan (Note 10)	668,921			552,415
For possible future issuance under 2014 Employee Stock Purchase Plan (Note 10)	72,338			50,283
For possible future issuance under 2015 Inducement Plan (Note 10)	165,000			165,000
Total common shares reserved for future issuance	7,080,921			2,161,458