Business Segment Information (Schedule Of Geographic Information Net Sales) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Net Sales	$ 151,413	$ 130,495	$ 124,762	$ 124,450	$ 144,600	$ 116,922	$ 118,039	$ 110,518	$ 531,120	$ 490,079	$ 478,699
United States [Member]
Net Sales									374,000	336,400	316,600
Asia [Member]
Net Sales									59,900	59,500	66,300
Europe [Member]
Net Sales									62,000	51,500	61,700
Canada [Member]
Net Sales									10,400	14,300	12,600
India [Member]
Net Sales									3,300	10,200	7,500
Other [Member]
Net Sales									$ 21,500	$ 18,200	$ 14,000