Inventories
 12 Months Ended
Mar. 31, 2013
Inventories [Abstract]  
Inventories
NOTE 5. INVENTORIES
     Inventories consisted of the following:
 
March 31
2013 2012
Raw materials $ 1,312,011 $ 1,285,106
Work in process 1,533,951 1,658,467
Finished goods 775,630   585,803  
3,621,592 3,529,376
Less inventory reserve (285,000 ) (300,000 )
Total inventories $ 3,336,592   $ 3,229,376