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Segment Disclosure
 3 Months Ended
Jul. 30, 2011
Segment Disclosure [Abstract]  
Segment Disclosure
Note 6. Segment Disclosure

We have organized our business into five business units which meet the definition of reportable segments under ASC 280-10, Segment Reporting: the Commercial segment, the Live Events segment, the Schools and Theatres segment, the Transportation segment, and the International segment.

Our Commercial segment primarily consists of sales of our video, Galaxy®, Fuelight™ and Valo™ product lines to resellers (primarily sign companies), outdoor advertisers, national retailers, quick-serve restaurants, casinos and petroleum retailers.  Our Live Events segment primarily consists of sales of integrated scoring and video display systems to college and professional sports facilities and convention centers and sales of our mobile PST display technology to video rental organizations and other live events type venues.  Our Schools and Theatres segment primarily consists of sales of scoring systems, Galaxy® displays and video display systems to primary and secondary education facilities and sales of our Vortek® automated rigging systems for theatre applications.  Our Transportation segment primarily consists of sales of our Vanguard® and Galaxy® product lines to governmental transportation departments, airlines and other transportation related customers.  Finally, our International segment primarily consists of sales of all product lines to geographies outside the United States and Canada.

Segment reports present results through contribution margin, which is comprised of gross profit less selling costs. Segment profit excludes general and administration expense, product development expense, interest income and expense, non-operating income and income tax expense.  Assets are not allocated to the segments. Depreciation and amortization, excluding that portion related to non-allocated costs, are allocated to each segment based on various financial measures.  In general, segments follow the same accounting policies as those described in Note 1.  Costs of domestic field sales and services infrastructure, including most field administrative staff, are allocated to the Commercial, Live Events, and Schools and Theatres segments based on cost of sales.  Shared manufacturing, building and utilities and procurement costs are allocated based on payroll dollars, square footage and various other financial measures.

We do not maintain information on sales by products and, therefore, disclosure of such information is not practical.
 
The following table sets forth certain financial information for each of our five operating segments for the periods indicated:

 
Three Months Ended
 
 
July 30,
  
July 31,
 
 
2011
  
2010
 
       
Net sales:
     
    Commercial
$32,703  $23,133 
    Live Events
 38,517   40,683 
    Schools & Theatres
 18,483   16,648 
    Transportation
 11,500   7,545 
    International
 17,495   12,494 
  $118,698  $100,503 
         
Contribution margin:
       
    Commercial
$4,538  $1,988 
    Live Events
 3,408   5,076 
    Schools & Theatres
 3,400   3,028 
    Transportation
 3,345   1,537 
    International
 2,607   2,621 
   17,298   14,250 
         
Non-allocated operating expenses:
       
    General and administrative
 6,464   5,588 
    Product design and development
 5,718   4,553 
Operating income
 5,116   4,109 
         
Nonoperating income (expense):
       
    Interest income
 435   455 
    Interest expense
 (76)  (36)
    Other income (expense), net
 (146)  95 
         
Income before income taxes
 5,329   4,623 
    Income tax expense
 1,961   2,181 
Net income
$3,368  $2,442 
         
Depreciation and amortization:
       
    Commercial
$1,681  $1,700 
    Live Events
 1,311   1,650 
    Schools & Theatres
 639   689 
    Transportation
 361   351 
    International
 164   226 
    Unallocated corporate depreciation
 495   458 
  $4,651  $5,074 

No single geographic area comprises a material amount of net sales or long-lived assets other than the United States.  The following table presents information about us in the United States and elsewhere:

 
 
United States
 
Others
 
Total
 
Net sales for three months ended:
      
      July 30, 2011
$98,100 $20,598 $118,698 
      July 31, 2010
 85,350  15,153  100,503 
           
Long-lived assets at:
         
      July 30, 2011
$66,242 $1,839 $68,081 
      April 30, 2011
 68,034  1,832  69,866 

We are not economically dependent on a limited number of customers for the sale of our products and services because we have numerous customers world-wide.  We are not economically dependent on a limited number of suppliers for our inventory items because we have numerous suppliers world-wide.