Retirement Benefits (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Pension Plans, Defined Benefit [Member]
Net periodic retirement (benefit) cost	$ (240)	$ (143)
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit, Lump Sum Buyout Benefits Paid, Current Year	670
Net periodic retirement (benefit) cost	(214)	(132)
Foreign Pension Plans, Defined Benefit [Member]
Net periodic retirement (benefit) cost	(26)	(11)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Net periodic retirement (benefit) cost	325	$ 266
Scenario, Forecast [Member] | United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit, Lump Sum Buyout Benefits Paid, Expected	$ 0