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Note 8 - Inventory
12 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Inventory Disclosure [Text Block]
8.
Inventory
 
Inventory, net of reserves, at 
March 31, 2021
and 
March 31, 2020
consisted of the following (in thousands):
 
   
March 31, 2021
   
March 31, 2020
 
Raw materials
  $
8,255
    $
10,739
 
Work-in-process
   
3,297
     
1,345
 
Finished goods
   
777
     
5,260
 
Deferred program costs
   
977
     
1,631
 
Inventory
  $
13,306
    $
18,975
 
 
The Company recorded inventory reserves of $
1.8
 million and
$1.3
 million for the fiscal years ended 
March 31, 2021
and
2020
, respectively.  These write downs were based on evaluating its inventory on hand for excess quantities and obsolescence.
 
Deferred program costs as of 
March 31, 2021
and 
March 31, 2020
primarily represent costs incurred on programs accounted for upon completion of the project when control has transferred to the customer before revenue and costs will be recognized.