Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum rental payments under operating leases that have initial or remaining noncancelable lease terms in excess of one year as of December 31, 2011 are as follows:

(in thousands)
2012	$	46,974
2013	37,972
2014	24,663
2015	22,251
2016	19,699
Thereafter	33,689
	$	185,248