Income Tax Expense (Tax Effects Of Temporary Differences That Give Rise To Significant Portions Of The Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Deferred tax assets:
Inventories	$ 5,834	$ 9,639
Pension and other postretirement benefits	3,969	11,345
Net operating and capital loss carryforwards — domestic	639	501
Net operating loss carryforward — foreign	4,603	4,486
Foreign tax credit carryforward	2,377	0
Other compensation-related costs and other cost accruals	7,048	12,104
State credit carryforward	2,103	2,098
Total deferred tax assets	26,573	40,173
Deferred tax liabilities:
Goodwill	(969)	(4,874)
Acquisition assets	(62,841)	(91,752)
Depreciation, software amortization	(19,584)	(24,092)
Net deferred tax liabilities before valuation allowance	(56,821)	(80,545)
Less valuation allowance	(7,144)	(4,440)
Net deferred tax liabilities	$ (63,965)	$ (84,985)