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Note 7 - Segment Reporting (Tables)
3 Months Ended
Dec. 31, 2014
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended

 
   

December 31,

2014

   

December 31,

2013

 

Sales

               

Cable TV

  $ 6,833,020     $ 6,119,733  

Telco

    4,036,293        

Intersegment

    (32,155 )      

Total sales

  $ 10,837,158     $ 6,119,733  
                 

Gross profit

               

Cable TV

  $ 2,034,845     $ 1,863,227  

Telco

    1,796,958        

Total gross profit

  $ 3,831,803     $ 1,863,227  
                 

Operating income

               

Cable TV

  $ 618,811     $ 233,352  

Telco

    137,533        

Total operating income

  $ 756,344     $ 233,352  
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
   

December 31,

2014

   

September 30,

2014

 

Segment assets

               

Cable TV

  $ 27,705,307     $ 29,241,335  

Telco

    17,372,214       17,781,114  

Non-allocated

    8,061,591       6,383,232  

Total assets

  $ 53,139,112     $ 53,405,681