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Note 4 - Property, Plant and Equipment - Property, Plant and Equipment Component (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Capitalized Property Plant and Equipment [Member]
Cable distribution systems	$ 1,336,560	$ 1,309,475
Equipment [Member]
Cable distribution systems	278,895	270,785
Furniture and Fixtures [Member]
Cable distribution systems	303,039	294,847
Building and Leasehold Improvements[Member]
Cable distribution systems	81,615	77,721
Software and Software Development Costs [Member]
Cable distribution systems	70,504	66,567
Construction in Progress [Member]
Cable distribution systems	63,695	50,816
Land [Member]
Cable distribution systems	9,480	9,470
Cable distribution systems	2,143,788	2,079,681
Less accumulated depreciation	(1,530,976)	(1,463,451)
	$ 612,812	$ 616,230

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

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 360



-SubTopic 10



-Section 50



-Paragraph 1



-Subparagraph (c)



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-Section S99



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-Subparagraph (SX 210.5-02.14)



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X

- 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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 360



-SubTopic 10



-Section 50



-Paragraph 1



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.13)



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



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-Topic 360



-SubTopic 10



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Section 02



-Paragraph 13



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Reference 4: http://www.xbrl.org/2003/role/presentationRef



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-Name Regulation S-X (SX)



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