Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Minimum Future Obligations Under All Non-Cancelable Operating Leases

	Operating     Leases
2012	$	10,888
2013		10,033
2014		6,905
2015		3,951
2016		3,003
Thereafter		6,759
Total minimum lease payments	$	41,539

Schedule Of Rent Expense For Operating Leases

	Year Ended December 31,
		2011		2010		2009
Rent expense	$	13,907	$	11,469	$	11,725