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Components of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Other Intangible Assets [Line Items] |  |
Intangible Assets, Gross Amount | $ 25,146 | $ 25,146
Finite-lived intangible assets, Accumulated Amortization | (6,513) | (5,078)
Finite-lived intangible assets, Accumulated Impairment Loss | (2,904) |
Intangible Assets, Net Carrying Value | 15,729 | 20,068
Hub [Member] |  |
Other Intangible Assets [Line Items] |  |
Intangible Assets, Gross Amount | 9,784 | 9,784
Finite-lived intangible assets, Accumulated Amortization | (4,166) | (3,585)
Finite-lived intangible assets, Accumulated Impairment Loss | (2,904) |
Intangible Assets, Net Carrying Value | 2,714 | 6,199
Hub [Member] | Customer Relationships [Member] |  |
Other Intangible Assets [Line Items] |  |
Finite-lived intangible assets, Gross Amount | 5,181 | 5,181
Finite-lived intangible assets, Accumulated Amortization | (2,467) | (2,015)
Finite-lived intangible assets, Accumulated Impairment Loss |  |
Finite-lived intangible assets, Net Carrying Value | 2,714 | 3,166
Hub [Member] | Customer Relationships [Member] | Minimum [Member] |  |
Other Intangible Assets [Line Items] |  |
Intangible assets estimated useful life | 7 years | 7 years
Hub [Member] | Customer Relationships [Member] | Maximum [Member] |  |
Other Intangible Assets [Line Items] |  |
Intangible assets estimated useful life | 15 years | 15 years
Hub [Member] | Relationships With Owner Operators [Member] |  |
Other Intangible Assets [Line Items] |  |
Finite-lived intangible assets, Gross Amount | 1,179 | 1,179
Finite-lived intangible assets, Accumulated Amortization | (1,179) | (1,050)
Finite-lived intangible assets, Accumulated Impairment Loss |  |
Finite-lived intangible assets, Net Carrying Value |  | 129
Hub [Member] | Relationships With Owner Operators [Member] | Minimum [Member] |  |
Other Intangible Assets [Line Items] |  |
Intangible assets estimated useful life | 2 years | 2 years
Hub [Member] | Relationships With Owner Operators [Member] | Maximum [Member] |  |
Other Intangible Assets [Line Items] |  |
Intangible assets estimated useful life | 6 years | 6 years
Hub [Member] | Information Technology [Member] |  |
Other Intangible Assets [Line Items] |  |
Finite-lived intangible assets, Gross Amount | 500 | 500
Finite-lived intangible assets, Accumulated Amortization | (500) | (500)
Finite-lived intangible assets, Accumulated Impairment Loss |  |
Finite-lived intangible assets, Net Carrying Value |  |
Intangible assets estimated useful life | 6 years | 6 years
Hub [Member] | Backlog/open orders [Member] |  |
Other Intangible Assets [Line Items] |  |
Finite-lived intangible assets, Gross Amount | 20 | 20
Finite-lived intangible assets, Accumulated Amortization | (20) | (20)
Finite-lived intangible assets, Accumulated Impairment Loss |  |
Finite-lived intangible assets, Net Carrying Value |  |
Intangible assets estimated useful life | 1 month | 1 month
Hub [Member] | Trade Names [Member] |  |
Other Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets, Gross Amount | 2,904 | 2,904
Indefinite-lived intangible assets, Net Carrying Value |  | 2,904
Mode [Member] | Agency/Customer Relationships [Member] |  |
Other Intangible Assets [Line Items] |  |
Finite-lived intangible assets, Gross Amount | 15,362 | 15,362
Finite-lived intangible assets, Accumulated Amortization | (2,347) | (1,493)
Finite-lived intangible assets, Accumulated Impairment Loss |  |
Finite-lived intangible assets, Net Carrying Value | $ 13,015 | $ 13,869
Intangible assets estimated useful life | 18 years | 18 years

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