Subsequent Event (Details) (Subsequent Event [Member], USD $) In Millions, except Per Share data, unless otherwise specified	Apr. 30, 2014
Subsequent Event [Line Items]
Common Stock, New Shares Issued	11.5
Shares Issued, Price Per Share	$ 6.20
Proceeds from Issuance of Common Stock	$ 67.2
Public Offering [Member]
Subsequent Event [Line Items]
Common Stock, New Shares Issued	10.0
Underwriters' Option [Member]
Subsequent Event [Line Items]
Common Stock, New Shares Issued	1.5