Accumulated Other Comprehensive Loss (Changes In Each Component Of AOCI) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (13,741)	$ (10,148)
Other comprehensive (loss) income before reclassifications	760	(3,597)
Amounts reclassified from accumulated other comprehensive (loss) income	83	(8)
Net current period other comprehensive (loss) income	843	(3,605)
Balance	(12,898)	(13,753)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,468)	(2,493)
Other comprehensive (loss) income before reclassifications	663	(3,698)
Net current period other comprehensive (loss) income	663	(3,698)
Balance	(4,805)	(6,191)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	259	166
Other comprehensive (loss) income before reclassifications	97	101
Amounts reclassified from accumulated other comprehensive (loss) income	(89)	(99)
Net current period other comprehensive (loss) income	8	2
Balance	267	168
Pension And Postretirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(8,532)	(7,821)
Amounts reclassified from accumulated other comprehensive (loss) income	172	91
Net current period other comprehensive (loss) income	172	91
Balance	$ (8,360)	$ (7,730)