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Note 10 - Revenue Concentrations (Detail)
Jun. 30, 2012
Jun. 30, 2011
Consolidated Entity Revenue Percentage 4.00% 3.00%
National Exchange Carrier Association [Member]
   
Consolidated Entity Revenue Percentage 9.30% 9.50%
TW [Member]
   
Consolidated Entity Revenue Percentage 12.10% 11.60%