Accumulated Other Comprehensive Loss (Summary Of Reclassifications Out Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes		$ 52	$ 27	$ 153	$ 80
Total net of tax		(85)	(46)	(257)	(137)
Total net of tax		(195)	41	(187)	43
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension And Postretirement Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net loss	[1]	137	73	410	217
Total before tax	[1]	137	73	410	217
Provision for income taxes	[1]	52	27	153	80
Total net of tax	[1]	85	46	257	137
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Realized gains on available-for-sale securities into earnings	[2]	(288)		(393)	(99)
Total before tax		(288)		(393)	(99)
Provision for income taxes	[3]	(43)	9	(59)	9
Total net of tax		$ (245)	$ 9	$ (334)	$ (108)

[1] These accumulated other comprehensive loss components are included in the computation of net periodic benefit costs (refer to Note 5 of the Notes to Consolidated Financial Statements for additional details regarding employee benefit plans).

[2] This amount is reported in Interest expense, net on the Consolidated Statements of Operations

[3] This amount is reported in Income tax expense on the Consolidated Statements of Operations