Note 19 - Revenue Concentrations (Detail)			12 Months Ended
Dec. 31, 2012 TW [Member]	Dec. 31, 2011 TW [Member]	Dec. 31, 2012 TWC [Member]	Dec. 31, 2011 TWC [Member]	Dec. 31, 2012 National Exchange Carrier Association [Member]	Dec. 31, 2011 National Exchange Carrier Association [Member]	Dec. 31, 2010 National Exchange Carrier Association [Member]
Consolidated Entity Revenue Percentage	12.50%	11.70%			9.80%	10.10%	9.90%
Concentration Risk, Percentage			4.00%	3.00%

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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

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-Section 50

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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-Section 50

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-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611

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