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5. INVENTORIES
9 Months Ended
Jan. 31, 2015
Inventory Disclosure [Abstract]  
5. INVENTORIES

Inventories are stated at the lower of cost or market and primarily include raw materials, direct labor and overhead costs (work-in-process) associated with our wholly-owned subsidiary, Avid. Cost is determined by the first-in, first-out method. Inventories consist of the following:

 

   January 31,
2015
   April 30,
2014
 
Raw materials  $3,105,000   $2,370,000 
Work-in-process   3,043,000    3,160,000 
Total inventories  $6,148,000   $5,530,000