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Note 15 - Segment Reporting (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
CVD
   
SDC
   
Eliminations
   
Consolidated
 
Assets
  $ 43,872,295     $ 4,628,432     $ (5,975,466 )   $ 42,525,261  
                                 
Revenue
  $ 19,149,704     $ 4,394,945     $ (1,386,912 )   $ 22,157,737  
Interest Expense
    195,861       9,013               204,874  
Depreciation and Amortization
    442,227       72,988               515,215  
Capital expenditures
    11,767,024       29,716               11,796,740  
Pretax earnings
    (18,722 )     418,814               400,092  
   
CVD
   
SDC
   
Eliminations
   
Consolidated
 
Assets
  $ 40,538,740     $ 3,927,306     $ (5,917,068 )   $ 38,548,978  
                                 
Revenue
  $ 26,860,243     $ 6,097,137     $ (1,963,495 )   $ 30,993,885  
Interest Expense
    144,534       38,435               182,969  
Depreciation and amortization
    525,965       71,075               597,040  
Capital expenditures
    158,494       46,441               204,935  
Pretax earnings
    3,782,977       1,004,663               4,787,640