Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements Of Operations [Abstract]
Net sales	$ 107,357	$ 83,270
Operating expenses:
Cost of goods sold	80,916	63,529
Selling, general and administrative expenses	13,582	11,860
Amortization of intangible assets	1,917	0
Loss (gain) on disposal or impairment of operating assets	87	(34)
Total operating expenses	96,502	75,355
Operating income	10,855	7,915
Interest income	(46)	(57)
Interest expense	128	71
Foreign currency exchange loss (gain)	5	(23)
Other income, net	(470)	(470)
Income before income tax provision	11,238	8,394
Income tax provision	3,789	3,032
Net income	$ 7,449	$ 5,362
Net income per share
Basic	$ 1.41	$ 1.01
Diluted	$ 1.40	$ 1.00
Weighted-average number of common shares (basic)	5,279	5,300
Weighted-average number of common shares (diluted)	5,317	5,344