Subsequent Events (Details) - Common Stock [Member] - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Oct. 17, 2017	Feb. 28, 2017
Subsequent Event [Line Items]
Common shares issued (in shares)	11,057,693	7,453,704
Stock price per share (in dollars per share)	$ 2.60	$ 2.70
Proceeds from sale of stock	$ 26.7	$ 18.5
Subsequent Event [Member]
Subsequent Event [Line Items]
Common shares issued (in shares)	11,057,693
Stock price per share (in dollars per share)	$ 2.60
Proceeds from sale of stock	$ 26.7
Subsequent Event [Member] | Broadwood Partners LP [Member]
Subsequent Event [Line Items]
Common shares issued (in shares)	2,692,307
Stock price per share (in dollars per share)	$ 2.60