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, 2016	Sep. 30, 2015
Deferred tax assets:
Inventories	$ 7,553	$ 6,336
Pension and other postretirement benefits	13,978	11,663
Net operating loss carryforward — domestic	372	520
Net operating loss carryforward — foreign	4,991	4,135
Other compensation-related costs and other cost accruals	13,678	11,785
State credit carryforward	1,944	1,704
Total deferred tax assets	42,516	36,143
Deferred tax liabilities:
Goodwill	(15,528)	(14,829)
Acquisition assets	(69,934)	(57,415)
Depreciation, software amortization	(20,285)	(18,681)
Net deferred tax liabilities before valuation allowance	(63,231)	(54,782)
Less valuation allowance	(5,711)	(4,129)
Net deferred tax liabilities	$ (68,942)	$ (58,911)