Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Preferred Stock, par value (in usd per share)	$ 0.001	$ 0.001
Common Stock, par value (in usd per share)	$ 0.001	$ 0.001
Common Stock, shares authorized (in shares)	175,000,000	125,000,000
Common Stock, shares issued (in shares)	89,796,774	75,793,725
Common Stock, shares outstanding (in shares)	89,781,283	70,778,234
Treasury stock, shares (in shares)	15,491	15,491
Series A Preferred Stock
Preferred Stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred Stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred Stock, shares outstanding (in shares)	2,093,155	2,093,155
Series B Preferred Stock
Preferred Stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred Stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred Stock, shares outstanding (in shares)	1,698	3,100