v3.7.0.1
Note 5 - Accounts Receivable and Work in Process (Tables)
 12 Months Ended
Dec. 31, 2016
Accounts Receivable And Work In Process Table [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Accounts receivable as of December 31, 2016 and 2015, consists of the following:

Description
  
2016
    
2015
  
Accounts receivable on completed contracts
  
$
43,292
    
$
39,100
  
Costs and estimated earnings on contracts in progress
    
60,349
      
252,339
  
Total
  
$
103,641
    
$
291,439
  
Costs in Excess of Billings and Billings in Excess of Costs [Table Text Block]
Work in progress as of December 31, 2016 and 2015 consists of the following as reflected in the balance sheet:

Description
  
2016
    
2015
  
Costs incurred on uncompleted contracts
  
$
166,889
    
$
1,519,570
  
Estimated earnings
    
39,828
      
290,037
  
 
    
206,717
      
1,809,607
  
Less billings to date
    
146,368
      
1,557,268
  
Total Costs and estimated earnings on contracts in progress
  
$
60,349
    
$
252,339