Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Jun. 15, 2013		Dec. 29, 2012
Property, Plant and Equipment [Line Items]
Buildings and storage tanks	$ 47,393	[1]	$ 45,813	[1]
Machinery, vehicles and equipment (a)	29,798	[1]	30,040	[1]
Leasehold improvements	1,883		3,180
Land	755		414
Construction in progress	8,422		4,658
Total property, plant and equipment	88,251		84,105
Less accumulated depreciation	(13,787)		(11,859)
Property, plant and equipment - net	74,464		72,246
Equipment at customers	44,312		41,884
Less accumulated depreciation	(25,659)		(23,938)
Equipment at customers - net	$ 18,653		$ 17,946

[1] (a) Fiscal 2013 numbers include preliminary fair values of assets acquired in the acquisition described in Note 3 that may be adjusted as additional information becomes known.