Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Minimum Lease Commitments Under Non-Cancelable Operating Leases

Year ending December 31:	Minimum Lease Commitment
2012	$	20,068
2013		12,964
2014		6,661
2015		3,210
2016		428
Thereafter		—
Total minimum lease commitments	$	43,331