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Subsequent Events - Additional Information (Detail) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2017 USD ($) Tractor Trailer	Sep. 30, 2017 Tractor
Subsequent Event [Line Items]
Purchase contract units tractors		154
Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase contract units tractors	38
Purchase contract units trailers | Trailer	45
Cost of purchasing equipment | $	$ 6

X

- Definition

Cost of purchasing equipment.

+ References

No definition available.

+ Details

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Namespace Prefix:	hubg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Purchase contract units tractors.

+ References

No definition available.

+ Details

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

X

- Definition

Purchase contract units trailers.

+ References

No definition available.

+ Details

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

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: