Consolidated Condensed Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Condensed Statements of Operations [Abstract]
Net sales	$ 30,968	$ 28,875	$ 93,557	$ 77,075
Operating expenses:
Cost of goods sold	23,047	22,075	71,693	58,374
Selling, general and administrative expenses	3,917	3,423	11,990	9,917
Amortization of intangible assets	709	587	2,186	1,329
Total operating expenses	27,673	26,085	85,869	69,620
Operating income	3,295	2,790	7,688	7,455
Interest income	(8)	(5)	(18)	(38)
Interest expense	124	24	352	88
Foreign currency exchange (gain) loss, net	(9)	10	(28)	19
Other income, net	(114)	(118)	(349)	(352)
Income before income tax provision	3,302	2,879	7,731	7,738
Income tax provision	861	815	2,380	2,473
Net income	$ 2,441	$ 2,064	$ 5,351	$ 5,265
Net income per share
Basic	$ 0.46	$ 0.39	$ 1.01	$ 1.00
Diluted	$ 0.46	$ 0.39	$ 1.00	$ 0.99