Inventories (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Inventories (Textual) [Abstract]
Additional amount that would have been reported in inventory if FIFO method had been used	$ 7,879	$ 7,977
LIFO expense (income)	(98)	(1,560)	1,563
Effect of LIFO liquidation on cost of goods sold		$ 1,300