Summary of Significant Accounting Policies (Details 6) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Earnings (loss) per common share [Abstract]
Weighted average common shares outstanding - basic	188,794	188,794	188,794	188,671	188,281	188,170	188,129	187,963	188,763	188,137	185,175	[1]
Effect of dilutive stock options and performance share awards (in shares)									142	92	0	[1]
Weighted Average Common Shares Outstanding - Diluted	188,932	188,797	188,968	188,815	188,374	188,338	188,267	188,220	188,905	188,229	185,175	[1]
Stock Options [Member]
Earnings (loss) per common share [Abstract]
Antidilutive securities excluded from computation of diluted loss per common share (in shares)											825
Restricted Stock [Member]
Earnings (loss) per common share [Abstract]
Antidilutive securities excluded from computation of diluted loss per common share (in shares)											18
Performance Share Awards [Member]
Earnings (loss) per common share [Abstract]
Antidilutive securities excluded from computation of diluted loss per common share (in shares)											656

[1] Due to the loss on common stock, 825 outstanding stock options, 18 restricted stock grants and 656 performance share awards were excluded from the computation of diluted loss per common share as their effect was antidilutive.