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Lease Commitments for Leases having Terms of More than One Year (Table Text Block)
6 Months Ended
Sep. 30, 2012
Leases, Operating [Abstract]  
Operating leases of lessee disclosure
Lease commitments for leases having terms of more than one year were as follows:
 
   
Property,
Plant and
Equipment
  
Rental
Equipment
  
Total
 
   
(Unaudited)
 
      
(In thousands)
    
Year-ended September 30:
         
2013
 $13,967  $91,320  $105,287 
2014
  9,099   72,297   81,396 
2015
  916   49,027   49,943 
2016
  781   18,960   19,741 
2017
  671   12,218   12,889 
Thereafter
  5,335   15,899   21,234 
Total
 $30,769  $259,721  $290,490