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Schedule of Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Total assets | $ 1,212,127 us-gaap_Assets | $ 1,047,943 us-gaap_Assets |
Goodwill | 262,813 us-gaap_Goodwill | 263,032 us-gaap_Goodwill | 263,251 us-gaap_Goodwill
Hub [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 233,424 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember | 233,643 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember | 233,862 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember
Mode [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill | 29,389 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember | 29,389 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember | 29,389 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember
Operating Segments [Member] | Hub [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 1,030,722 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember | 887,848 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember |
Goodwill | 233,424 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember | 233,643 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_HubMember |
Operating Segments [Member] | Mode [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 189,787 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember | 164,071 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember |
Goodwill | 29,389 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember | 29,389 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = hubg_ModeMember |
Intersegment Elims [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | $ (8,382)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | $ (3,976)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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