Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Capital Leases and Operating Leases

The following table summarizes the approximate future minimum rentals under non-cancelable operating leases, including renewals that are reasonably assured, and future minimum capital lease payments in effect at December 31, 2012 (in thousands):

Years Ended December 31:	Capital Leases			Operating Leases
2013	$	9,492		$	266,301
2014	9,492			265,201
2015	8,547			256,778
2016	7,030			211,464
2017	5,268			175,357
Thereafter	16,344			334,897
Total minimum lease payments	$	56,173		$	1,509,998
Less amounts representing interest	(13,277		)
Present value of minimum lease payments	$	42,896