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Note 5 - Fixed Assets - Components of Fixed Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Cost	$ 224,643	$ 182,274
Net	73,083	57,575
Accumulated depreciation	151,560	124,699
Land [Member]
Cost	2,520	2,519
Net	2,520	2,519
Building [Member]
Cost	10,366	10,231
Net	5,837	6,203
Accumulated depreciation	4,529	4,028
Vehicles [Member]
Cost	52,497	35,983
Net	18,758	9,952
Accumulated depreciation	33,739	26,031
Furniture and Fixtures [Member]
Cost	54,194	43,399
Net	16,387	13,964
Accumulated depreciation	37,807	29,435
Computer Equipment [Member]
Cost	81,516	69,405
Net	21,620	20,777
Accumulated depreciation	59,896	48,628
Leasehold Improvements [Member]
Cost	23,550	20,737
Net	7,961	4,160
Accumulated depreciation	$ 15,589	$ 16,577

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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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (b)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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