Business combination acquisition related costs per diluted share.

No definition available.

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- Definition

Business combination acquisition related costs per share.

+ References

No definition available.

+ Details

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- Definition

Percentage of goodwill estimated to be deductible after purchase of noncontrolling interests by the company.

+ References

No definition available.

+ Details

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- Definition

Percentage of goodwill estimated to be deductible for tax purposes.

+ References

No definition available.

+ Details

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- Definition

Amount of liabilities assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

+ Details

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- Definition

For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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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
-Subparagraph (a)
-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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

+ Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

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- Details

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- Details

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Acquired Business and Noncontrolling Interests - Additional Information (Detail) - USD ($)		12 Months Ended
	Sep. 20, 2017	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Goodwill		$ 39,065,000	$ 31,134,000	$ 31,134,000
Fletes Avella \| Landstar Metro
Payments to acquire businesses, gross	$ 8,460,000
Business combination, recognized identifiable assets acquired and liabilities assumed, liabilities		1,900,000
Ownership interest acquired by affiliates	30.00%
Goodwill		$ 8,800,000
Percentage of goodwill estimated to be deductible for tax purposes		70.00%
Percentage of goodwill estimated to be deductible after purchase of noncontrolling interests by the company		100.00%
One-time costs related to completion of acquisition		$ 1,000,000
One-time costs related to completion of acquisition, per share		$ 0.01
One-time costs related to completion of acquisition, per share diluted		$ 0.01
Fletes Avella \| Landstar Servicios
Ownership interest acquired by affiliates	30.00%