Stockholders' Equity (Deficit) (Details) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2015 USD ($) shares	Sep. 30, 2016 Vote
Stockholders' Equity (Deficit)
Number of votes per share that common stockholders are entitled to receive | Vote		1
Cowen & Co. LLC | At the Market Issuance Sales Agreement [Member]
Stockholders' Equity (Deficit)
Maximum aggregate offering price | $	$ 100
Notice period of termination of sales agreement	10 days
Number of shares sold by the entity | shares	0
Cowen & Co. LLC | Maximum [Member] | At the Market Issuance Sales Agreement [Member]
Stockholders' Equity (Deficit)
Percentage of gross proceeds payable as commission	3.00%