Equity-Based Compensation (Summary Of Stock Option Transactions) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009
Equity-Based Compensation [Abstract]
Options, Balance at beginning of the period	629,781	630,889	598,407
Options, Granted	239,000	131,000	146,850
Options, Exercised	(3,375)	(28,586)	(5,025)
Options, Forfeited	(94,907)	(103,522)	(109,343)
Options, Balance at end of the period	770,499	629,781	630,889
Weighted Average Exercise Price, Balance at beginning of the period	$ 17.02	$ 17.88	$ 19.01
Weighted Average Exercise Price, Granted	$ 9.74	$ 8.90	$ 13.56
Weighted Average Exercise Price, Exercised	$ 9.97	$ 9.46	$ 9.38
Weighted Average Exercise Price, Forfeited	$ 17.89	$ 14.25	$ 18.93
Weighted Average Exercise Price, Balance at end of the period	$ 14.74	$ 17.02	$ 17.88
Weighted Average Remaining Contractual Life (in years), Balance at end of the Period	7.23
Aggregate Intrinsic Value, Balance at end of the Period	$ 1,165,000