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Segment Information
 9 Months Ended
Jan. 31, 2012
Segment Information [Abstract]  
Segment Information

D. Segment Information

The following table provides financial information by business segments for the three and nine months ended January 31, 2012 and 2011 (in thousands):

 

     Domestic
Operations		      International
Operations		      Corporate     Total  

Three months ended January 31, 2012

           

Revenues from external customers

    $ 17,142       $ 4,432       $ —        $ 21,574   

Intersegment revenues

      1,369         511         (1,880 )      —     

Operating earnings (loss) before income taxes

      233         504         (873 )      (136 ) 

Three months ended January 31, 2011

           

Revenues from external customers

    $ 19,108       $ 3,460       $ —        $ 22,568   

Intersegment revenues

      1,054         96         (1,150 )      —     

Operating earnings (loss) before incomes taxes

      774         148         (748 )      174   

 

     Domestic
Operations		      International
Operations		      Corporate     Total  

Nine months ended January 31, 2012

           

Revenues from external customers

    $ 64,364       $ 9,493       $ —        $ 73,857   

Intersegment revenues

      1,770         777         (2,547 )      —     

Operating earnings (loss) before income taxes

      1,600         704         (2,555 )      (251 ) 

Nine months ended January 31, 2011

           

Revenues from external customers

    $ 62,324       $ 10,727       $ —        $ 73,051   

Intersegment revenues

      2,222         743         (2,965 )      —     

Operating earnings (loss) before incomes taxes

      4,470         481         (2,430 )      2,521