(Loss)/Earnings Per Common Share (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
(Loss)/Earnings Per Common Share
Weighted average shares for basic (loss)/earnings per share	118,977,000	123,439,000	121,301,000
Weighted average shares and dilutive common share equivalents for dilutive (loss)/earnings per share	118,977,000	123,439,000	121,301,000
Stock options and warrants
(Loss)/Earnings Per Common Share
Anti-dilutive securities excluded from computation of dilutive earnings loss per share (in shares)	9,100,000	10,100,000	8,300,000
Restricted stock
(Loss)/Earnings Per Common Share
Anti-dilutive securities excluded from computation of dilutive earnings loss per share (in shares)	6,800,000	6,100,000	11,400,000
Restricted stock units (RSUs)
(Loss)/Earnings Per Common Share
Anti-dilutive securities excluded from computation of dilutive earnings loss per share (in shares)	3,300,000	6,100,000	6,200,000