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Inventories (Tables)
 6 Months Ended
Oct. 31, 2013
Inventories [Abstract]  
Components Of Inventories

 

 

 

 

 

 

 

 

 

October 31,

 

April 30,

(in thousands)

 

2013

 

2013

Raw materials

 

$
12,980 

 

$
11,823 

Work-in-process

 

 
17,007 

 

 
17,170 

Finished goods

 

 
12,130 

 

 
11,318 

 

 

 

 

 

 

 

Total FIFO inventories

 

 
42,117 

 

 
40,311 

 

 

 

 

 

 

 

Reserve to adjust inventories to LIFO value

 

 
(10,986)

 

 
(10,973)

 

 

 

 

 

 

 

Total LIFO inventories

 

$
31,131 

 

$
29,338