Pension Plans (Change in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
AOCI Attributable to Parent, Before Tax [Roll Forward]
Accumulated other comprehensive loss- beginning of year	$ 95,925	$ 74,357
Recognized during year - net actuarial (losses)	(4,388)	(3,389)
Occurring during year - settlement loss	(66,332)	0
Occurring during year - net actuarial losses	6,445	27,038
Foreign exchange impact	(3,311)	(2,081)
Accumulated other comprehensive loss- end of year	28,339	95,925
U.S. Plan [Member]
AOCI Attributable to Parent, Before Tax [Roll Forward]
Accumulated other comprehensive loss- beginning of year	68,256	55,180
Recognized during year - net actuarial (losses)	(2,577)	(2,213)
Occurring during year - settlement loss	(66,332)	0
Occurring during year - net actuarial losses	653	15,289
Foreign exchange impact	0	0
Accumulated other comprehensive loss- end of year	0	68,256
International Plans [Member]
AOCI Attributable to Parent, Before Tax [Roll Forward]
Accumulated other comprehensive loss- beginning of year	27,669	19,177
Recognized during year - net actuarial (losses)	(1,811)	(1,176)
Occurring during year - settlement loss	0	0
Occurring during year - net actuarial losses	5,792	11,749
Foreign exchange impact	(3,311)	(2,081)
Accumulated other comprehensive loss- end of year	$ (28,339)	$ 27,669