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Legal Matters - Additional Information (Detail) - Robles Lawsuits [Member]		1 Months Ended	9 Months Ended
	Aug. 05, 2015 Plaintiff Employee	May. 31, 2015 Plaintiff	Sep. 30, 2015
Loss Contingencies [Line Items]
Percentage of California drivers who accepted settlement offers			93.00%
Number of plaintiffs		2
Number of plaintiffs against hub group trucking	63
Number of employees filed lawsuit | Employee	5
Number of claims accepted settlement offers	58

X

- Definition

Loss contingency percentage of claimants approving proposed settlement offer.

+ References

No definition available.

+ Details

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X

- Definition

Number of employees filed lawsuit.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Number of claims settled.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
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X

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 450



-SubTopic 20



-Section 50



-Paragraph 4



-Subparagraph (a)



-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

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