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Property and Equipment Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 22,199	$ 21,321
Office furniture and equipment	6,117	6,352
Total cost	103,490	91,777
Accumulated depreciation	(64,210)	(56,034)
Property and equipment, net	39,280	35,743
Computer Software and Hardware [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Other, Gross	57,277	46,207
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Other, Gross	$ 17,897	$ 17,897
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	1 year
Minimum [Member] | Computer Software and Hardware [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	1 year
Minimum [Member] | Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	5 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	12 years
Maximum [Member] | Computer Software and Hardware [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	7 years
Maximum [Member] | Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	12 years
Maximum [Member] | Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful Life	10 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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- Definition

Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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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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