Other (Income) Expense, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Other (Income) Expense, Net
Net (gain) loss on sales of assets	$ (229)	$ (80)	$ (230)	$ (72)
Rent income	(131)	(128)	(260)	(256)
Net (gain) loss on investments in deferred compensation program	(417)	(527)	(526)	(896)
Amount of (Income) Expense Recognized in Earnings on Derivative	43	43	86	85
Other	(113)	3	(136)	(2)
Other (income) expense, net	$ (890)	$ (732)	$ (1,152)	$ (1,226)