Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2015

Equity [Abstract]

Summary of Significant Accounting Policies

Outstanding common stock warrants consist of the following:

Issue Date	Expiration Date	Total Warrants		Exercise Price
4/26/2013	4/26/2018	69,321		$                       11.18
10/31/2013	4/30/2019	685,715		$                         8.50
2/5/2014	2/5/2019	1,329,731		$                         7.40
7/24/2014	7/24/2019	6,198,832		$                         2.45
7/24/2014	1/24/2016	4,795,321		$                         2.45
6/22/2015	6/22/2020	3,000,000	*	$                         0.75
		16,078,920

* Warrants will become exercisable upon stockholder approval.