Segment Information (Consolidated Total Assets by Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Assets	$ 2,511,736	$ 2,397,202
Property, plant and equipment, net	688,336	513,279
Aerospace [Member]
Assets	1,529,882	1,440,355
Energy [Member]
Assets	628,995	610,345
Unallocated Corporate [Member]
Assets	274,430	273,510
Property, plant and equipment, net	78,429	72,992
Total of Reporting Segments [Member]
Assets	$ 2,158,877	$ 2,050,700