Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements of Operations [Abstract]
Revenues	$ 179,519	$ 194,093	$ 487,375	$ 533,035
Cost of goods sold	141,034	150,250	383,391	434,577
Gross profit	38,485	43,843	103,984	98,458
Selling, general and administrative expenses	23,805	24,826	70,238	66,112
Amortization of intangible assets	415	704	1,243	2,111
Restructuring and relocation expenses	1,717		1,717
Operating income	12,548	18,313	30,786	30,235
Other income			(1,709)
Interest expense	47	59	151	203
Interest income	(7)	(25)	(28)	(88)
Income before income taxes	12,508	18,279	32,372	30,120
Income tax provision	3,203	6,141	8,864	12,316
Net income	$ 9,305	$ 12,138	$ 23,508	$ 17,804
Earnings per share:
Basic	$ 0.78	$ 1.03	$ 1.97	$ 1.51
Diluted	$ 0.77	$ 1.02	$ 1.96	$ 1.50
Weighted average shares:
Basic	11,941	11,812	11,932	11,782
Diluted	12,016	11,861	12,007	11,834