Deferred Compensation Plan (Tables)

12 Months Ended

Dec. 31, 2011

Deferred Compensation Plan [Abstract]

Schedule Of Deferred Compensation Plan Asset And Liability

	As of December 31,
	2011		2010
Money market investments included in other assets	$	3,199	$	3,427
Deferred compensation liability included in other long-term     liabilities	$	3,199	$	3,427