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Lease Commitments for Leases having Terms of More than One Year (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Year-ended June 30:  
2013 $ 108,746
2014 89,747
2015 55,037
2016 22,125
2017 12,266
Thereafter 20,220
Total 308,141
Property, Plant and Equipment
 
Year-ended June 30:  
2013 14,235
2014 12,109
2015 969
2016 808
2017 714
Thereafter 5,461
Total 34,296
Rental Equipment
 
Year-ended June 30:  
2013 94,511
2014 77,638
2015 54,068
2016 21,317
2017 11,552
Thereafter 14,759
Total $ 273,845