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Note 7 - Accrued Expenses
12 Months Ended
Mar. 31, 2016
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
7.
ACCRUED EXPENSES
 
Accrued expenses consisted of the following:
 
   
March 31,
 
   
2016
   
2015
 
                 
Salaries, wages and related items
  $
3,288,169
    $
1,571,347
 
Profit sharing
   
1,769,261
     
1,088,089
 
Health insurance
   
353,825
     
405,826
 
Warranty reserves
   
266,455
     
231,803
 
Other
   
1,165,164
     
232,386
 
Total
  $
6,842,874
    $
3,529,451