Controlled Equity Offering and Public Offering of Common Stock (Tables)

12 Months Ended

Dec. 31, 2015

Text Block [Abstract]

Schedule of Total Sales under 2015 Sales Agreement

The following table summarizes the total sales under the 2015 Sales Agreement for the periods indicated (in thousands, except per share amounts):

	Year Ended
	December 31, 2015
Total shares of common stock sold		2,014.3
Average price per share	$	3.25
Gross proceeds	$	6,546
Commissions earned by Cantor	$	197
Other issuance costs	$	259