Accrued Liabilities (Schedule Of Accrued Liabilities) (Details) (USD $) In Thousands	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2009
Accrued Liabilities [Abstract]
Salaries, wages and related fringe benefits	$ 60,456		$ 50,540
Taxes	54,360		25,367
Advance payments on sales contracts	41,871		39,026
Product warranty	23,006	23,531	19,100	18,838	17,006	19,312
Other	48,792		45,008
Total accrued liabilities	$ 228,485		$ 179,041