Restructuring (Tables)

6 Months Ended

12 Months Ended

Jun. 24, 2012

Dec. 25, 2011

Restructuring Cost and Reserve [Line Items]

Summary of restructuring reserve activity

	Balance at December  26, 2010		Provision		Payments			Balance at December 25, 2011
Vessel leases, net of estimated sublease(1)	$	—	$	81,865	$	(4,805	)	$	77,060
Rolling stock per-diem and lease termination costs		—		11,666		(1,745	)		9,921
Personnel related costs		—		5,496		(166	)		5,330
Facility leases		—		187		(52	)		135
Total	$	—	$	99,214	$	(6,768	)	$	92,446

(1) On April 5, 2012, the Company entered into an agreement to terminate these vessel leases. See Note 18 for additional details.

Personnel related costs [Member]

Restructuring Cost and Reserve [Line Items]

Summary of restructuring reserve activity

	Balance at December 25, 2011		Provision		Payments			Balance at June  24, 2012
Personnel related costs	$	233	$	—	$	(209	)	$	24

	Balance at December 26, 2010		Payments			Adjustments		Balance at December 25, 2011
Personnel related costs	$	2,032	$	(1,799	)	$	—	$	233
Other associated costs		10		(10	)		—		—
Total	$	2,042	$	(1,809	)	$	—	$	233