Property and Equipment (Tables)

6 Months Ended

12 Months Ended

Jun. 24, 2012

Dec. 25, 2011

Property and Equipment [Abstract]

Property and equipment

	June 24, 2012				December 25, 2011
	Historical Cost		Net Book Value		Historical Cost		Net Book Value
Vessels and vessel improvements	$	152,439	$	64,295	$	150,658	$	67,379
Containers		37,362		22,188		37,831		23,114
Chassis		12,556		4,866		12,713		5,429
Cranes		27,722		14,132		27,641		15,144
Machinery and equipment		31,866		10,993		31,015		11,661
Facilities and land improvements		28,030		21,348		27,257		21,293
Software		25,175		1,379		25,169		1,268
Construction in progress		20,881		20,881		21,857		21,857
Total	$	336,031	$	160,082	$	334,141	$	167,145

Buildings, chassis and cranes	25 years
Containers	15 years
Vessels	20-40 years
Software	3 years
Other	3-10 years

	December 25, 2011				December 26, 2010
	Historical Cost		Net  Book Value		Historical Cost		Net  Book Value
Vessels and vessel improvements	$	150,658	$	67,379	$	147,032	$	74,057
Containers		37,831		23,114		37,212		24,089
Chassis		12,713		5,429		12,449		5,938
Cranes		27,641		15,144		26,744		16,253
Machinery & equipment		31,015		11,661		28,962		11,206
Facilities & land improvement		27,257		21,293		26,355		21,176
Software		25,169		1,268		23,837		1,605
Construction in progress		21,857		21,857		25,673		25,673
Total	$	334,141	$	167,145	$	328,264	$	179,997