Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	Oct. 26, 2015	Jul. 24, 2015	Mar. 31, 2016
Class of Stock [Line Items]
Common shares issued from exercise of stock options (in shares)			100,000
Authorized but unissued shares of common stock (in shares)			6,300,000
Number of treasury stock retired (in shares)	199,275
Number of treasury stock retired, value	$ (2.6)
Stock issued, underwritten public offering, value		$ 28.7
Stock issued, underwritten public offering, value (in shares)		10,500,000
Common stock per share value (in dollars per share)		$ 2.75
Net proceeds from the issuance of common stock		$ 26.8	$ 0.2
Warrants [Member]
Class of Stock [Line Items]
Number of warrants issued (in shares)			500,000
Exercise price of warrants (in dollars per share)			$ 1.74