Amortization Period of Tires

No definition available.

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- Definition

change in estimate financial impact, net of tax

+ References

No definition available.

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- Definition

change in estimate financial impact, per share, net of tax

+ References

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ 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)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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).

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

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Significant Accounting Policies Property, Equipment and Depreciation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment
Amortization Period of Tires	2 years
Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease)			$ 3,300,000
change in estimate financial impact, per share, net of tax			$ 0.02
Communications and Utilities Expense [Member]
Property, Plant and Equipment
Depreciation	$ 900,000	$ 1,100,000
Tractors [Member]
Property, Plant and Equipment
Property, Plant, and Equipment, Salvage Value	15,000
Trailers [Member]
Property, Plant and Equipment
Property, Plant, and Equipment, Salvage Value	$ 4,000
Minimum [Member] \| Land Improvements and Buildings [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] \| Furniture and Fixtures [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] \| Shop and Service Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] \| Revenue Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] \| Land Improvements and Buildings [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	30 years
Maximum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	25 years
Maximum [Member] \| Furniture and Fixtures [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] \| Shop and Service Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] \| Revenue Equipment [Member]
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	7 years