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Note 5 - Property and Equipment (Tables)
12 Months Ended
Mar. 31, 2016
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
March 31,
 
   
2016
   
2015
 
Furniture, fixtures and improvements
  $
5,559,885
    $
4,931,748
 
Equipment leased to customers
   
2,898,639
     
1,672,402
 
     
8,458,523
     
6,604,150
 
Less accumulated depreciation
   
(3,880,750
)
   
(4,032,650
)
                 
Property and equipment, net
  $
4,577,774
    $
2,571,499