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Note 14 - Segment Reporting (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
 
 
CVD
 
 
SDC
 
 
Eliminations
 
 
Consolidated
 
Assets
  $
44,783,126
    $
4,558,111
    $
(3,680,845
)   $
45,660,392
 
                                 
Revenue
  $
18,568,132
    $
2,934,831
    $
(547,616
)   $
20,955,347
 
Interest Expense
   
78,322
     
1,539
     
 
     
79,861
 
Depreciation and
Amortization
   
750,680
     
62,978
     
 
     
813,658
 
Capital expenditures
   
 
     
5,850
     
 
     
 
 
Pretax earnings/(loss)
   
 
     
(441,610
)    
 
     
 
 
 
 
CVD
 
 
SDC
 
 
Eliminations
 
 
Consolidated
 
Assets
  $
39,529,971
    $
3,619,304
    $
(2,017,571
)   $
41,131,704
 
                                 
Revenue
  $
35,473,057
    $
5,674,258
    $
(2,181,928
)   $
38,965,387
 
Interest Expense
   
85,765
     
6,336
     
 
     
92,101
 
Depreciation and Amortization
   
764,467
     
62,062
     
 
     
826,529
 
Capital expenditures
   
212,140
     
36,165
     
 
     
248,305
 
Pretax (loss)/earnings
   
3,616,280
     
1,046,911
     
 
     
4,663,191