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, 2017	Sep. 30, 2016
Deferred tax assets:
Inventories	$ 9,639	$ 7,553
Pension and other postretirement benefits	11,345	13,978
Net operating and capital loss carryforwards — domestic	501	372
Net operating loss carryforward — foreign	4,486	4,991
Other compensation-related costs and other cost accruals	12,104	13,678
State credit carryforward	2,098	1,944
Total deferred tax assets	40,173	42,516
Deferred tax liabilities:
Goodwill	(4,874)	(15,528)
Acquisition assets	(91,752)	(69,934)
Depreciation, software amortization	(24,092)	(20,285)
Net deferred tax liabilities before valuation allowance	(80,545)	(63,231)
Less valuation allowance	(4,440)	(5,711)
Net deferred tax liabilities	$ (84,985)	$ (68,942)