Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Rent Expense Under Operating Leases

	2011		2010		2009
Rent expense	$	10,675	$	10,299	$	11,609

Schedule Of Future Minimum Lease Payments Under Non-Cancelable Operating Leases

2012	$	9,633
2013	$	8,152
2014	$	5,910
2015	$	3,263
2016	$	2,586
Thereafter	$	3,842