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The period after purchase of equipment the Company replaced the old equipment with new equipment.

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No definition available.

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The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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-Section 50

-Paragraph 20

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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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.

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No definition available.

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- Definition

Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

+ References

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

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Note 1 - Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	45.00%
Letters of Credit Outstanding, Amount (in Dollars)	$ 9.2
Number of Operating Segments	6us-gaap_NumberOfOperatingSegments
Number of Reportable Segments	4us-gaap_NumberOfReportableSegments	2us-gaap_NumberOfReportableSegments
Supplies and Maintenance Costs [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Amortization (in Dollars)	5.7	5.8	5.6
Tractors [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Replacement of Equipment Period after Purchase	4 years 73 days
Property, Plant and Equipment, Useful Life	5 years
Property, Plant and Equipment, Salvage Value, Percentage	25.00%
Trailers [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Replacement of Equipment Period after Purchase	5 years 219 days
Property, Plant and Equipment, Useful Life	7 years
Property, Plant and Equipment, Salvage Value, Percentage	35.00%
Tires in Service [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	24 months
Insurance Claims [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Letters of Credit Outstanding, Amount (in Dollars)	$ 9.2
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage	9.00%	8.00%	9.00%
Sales Revenue, Net [Member] \| Geographic Concentration Risk [Member] \| UNITED STATES
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage	99.00%