Consolidated Statements of Stockholders' Equity (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]
Public offering, shares	9,100,000	1,886,000
Exercise of options, shares		6,812
Exercise of warrants, shares	3,863,429
Issuance of common stock, shares	4,791,377