Commitments, Contingencies And Other Matters (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended
	Jun. 02, 2011	Apr. 27, 2011	Mar. 25, 2011	Jan. 05, 2011	Dec. 17, 2010	Aug. 25, 2010	Feb. 24, 2007	Jan. 29, 2007	Feb. 24, 2006	Jun. 30, 2011	Dec. 31, 2010
Commitments, Contingencies And Other Matters
Number of consolidated lawsuits								2
Number of claims rejected							40		40
Payment for settlement of suits		$ 154,000	$ 1,700	$ 2,500	$ 500	$ 2,250
Accrued legal settlements										195,400
Litigation settlement, expense	$ 23,000