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Legal Matters - Additional Information (Detail) (Robles and Barillas lawsuits [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended | 0 Months Ended
--- | --- | ---
Sep. 30, 2014 | Feb. 11, 2015
Legal Settlement By Party [Line Items] |  |
Settlement charges for individual drivers | $ 9.3 us-gaap_LossContingencyDamagesPaidValue |
Legal , communication and implementation charges | $ 1.0 us-gaap_LitigationSettlementExpense |
Subsequent Event [Member] |  |
Legal Settlement By Party [Line Items] |  |
Percentage of accepted settlement offer |  | 92.00%hubg_LossContingencyPercentageOfClaimantsApprovingProposedSettlementOffer / us-gaap_LitigationCaseAxis = hubg_RoblesAndBarillasLawsuitsMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition Loss contingency percentage of claimants approving proposed settlement offer. + References No definition available. + Details
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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
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- Definition Amount of damages paid to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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