Segment Information (Consolidated Depreciation and Amortization by Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 80,917	$ 69,036	$ 75,235
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	9,219	7,799	7,979
Aerospace [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	47,277	40,825	46,488
Industrial [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 24,421	$ 20,412	$ 20,768