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Segment Information (Consolidated Total Assets by Segment) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Sep. 30, 2011
Assets $ 1,794,237 $ 1,781,434
Property, plant and equipment, net 214,146 206,725
Aerospace [Member]
   
Assets 1,042,807 1,036,797
Energy [Member]
   
Assets 585,470 569,929
Total Segment Assets [Member]
   
Assets 1,628,277 1,606,726
Unallocated Corporate [Member]
   
Property, plant and equipment, net 12,587 8,556
Other unallocated assets $ 153,373 $ 166,152