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Business Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014 Segment
Segment Reporting Information [Line Items]
Reporting business segments	2us-gaap_NumberOfReportableSegments
Minimum [Member]
Segment Reporting Information [Line Items]
Number of railheads	1hubg_NumberOfRailheads / us-gaap_RangeAxis = us-gaap_MinimumMember

X

- Definition

Number of railheads.

+ References

No definition available.

+ Details

Name:	hubg_NumberOfRailheads
Namespace Prefix:	hubg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: