Segment Information - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
Sep. 27, 2014 Customer	Sep. 28, 2013 Customer	Sep. 27, 2014 Customer	Sep. 28, 2013 Customer	Dec. 28, 2013
Segment Reporting Information [Line Items]
Goodwill	$ 31,134,000	$ 57,470,000	$ 31,134,000	$ 57,470,000	$ 31,134,000
Disclosure of major customers			No single customer accounted for more than 10% of the Company's consolidated revenue
Number of customers accounting for 10 percent or more of total revenue	0	0	0	0
No single customer accounted for benchmark percentage to be considered major customer	10.00%	10.00%	10.00%	10.00%
Transportation Logistics
Segment Reporting Information [Line Items]
Goodwill	31,134,000	57,470,000	31,134,000	57,470,000
Transportation Logistics \| Discontinued Operations
Segment Reporting Information [Line Items]
Goodwill		$ 26,336,000		$ 26,336,000

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

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- Definition

Number of Customers Accounting for 10 Percent Or More Of Total Revenue

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 42

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

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