Earnings Per Share - Additional Information (Details) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculations of earnings per share as the effect of including them would have been anti-dilutive	0.1	0.4
Antidilutive Securities Due To Effect On Period Loss [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculations of earnings per share as the effect of including them would have been anti-dilutive	1.7	1.6
Series A Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculations of earnings per share as the effect of including them would have been anti-dilutive	7.3	16.3
Series B Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculations of earnings per share as the effect of including them would have been anti-dilutive	38.8	42.1