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Schedule of Outstanding Debt (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Secured long-term debt $ 92,079us-gaap_LongTermDebt $ 8,246us-gaap_LongTermDebt
Less current portion (19,619)us-gaap_LongTermDebtCurrent (1,771)us-gaap_LongTermDebtCurrent
Total long-term debt 72,460us-gaap_LongTermDebtNoncurrent 6,475us-gaap_LongTermDebtNoncurrent
Secured Equipment Notes due in December 2019 [Member]    
Debt Instrument [Line Items]    
Equipment note 13,387us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueDecemberTwoThousandNineteenMember
 
Secured Equipment Notes due in November 2019 [Member]    
Debt Instrument [Line Items]    
Equipment note 28,429us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueNovemberTwoThousandNineteenMember
 
Secured Equipment Notes due in September 2019 [Member]    
Debt Instrument [Line Items]    
Equipment note 22,772us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueSeptemberTwoThousandNineteenMember
 
Secured Equipment Notes due in February 2019 [Member]    
Debt Instrument [Line Items]    
Equipment note 21,016us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueFebruaryTwoThousandNineteenMember
 
Secured Equipment Notes due in June 2018 [Member]    
Debt Instrument [Line Items]    
Equipment note $ 6,475us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueJuneTwoThousandEighteenMember
$ 8,246us-gaap_SecuredDebt
/ us-gaap_LongtermDebtTypeAxis
= hubg_EquipmentNotesDueJuneTwoThousandEighteenMember