Retirement and Other Benefit Plans (Schedule Of Funded Status) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Funded status at end of year	$ (30,300)	$ (40,000)
Accrued benefit cost	(30,300)	(40,000)
Current liability	(200)	(200)
Noncurrent liability	30,223	39,842
Accumulated other comprehensive (income)/loss (before tax effect)	47,400	56,000
Net actuarial loss	47,400	56,000
Accumulated Other Comprehensive (Income)/Loss (before tax effect)	$ 47,400	$ 56,000