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