Consolidated Condensed 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
Net sales	$ 30,284	$ 27,278	$ 88,578	$ 82,147
Cost of goods sold	22,757	20,991	69,653	65,275
Gross margin	7,527	6,287	18,925	16,872
Selling, general and administrative expenses	3,371	2,661	10,433	8,342
Amortization of intangible assets	492	709	1,544	2,186
Loss (gain) on disposal of operating assets	33	0	(89)	0
Operating income	3,631	2,917	7,037	6,344
Interest income	(4)	(8)	(18)	(16)
Interest expense	76	124	261	352
Foreign currency exchange (gain) loss, net	7	(19)	7	(22)
Other income, net	(108)	(113)	(294)	(347)
Income from continuing operations before income tax provision	3,660	2,933	7,081	6,377
Income tax provision	1,103	831	2,134	1,990
Income from continuing operations	2,557	2,102	4,947	4,387
Income (loss) from discontinued operations, net of tax	(79)	339	2,381	964
Net income	$ 2,478	$ 2,441	$ 7,328	$ 5,351
Income per share from continuing operations
Basic (in dollars per share)	$ 0.47	$ 0.40	$ 0.92	$ 0.83
Diluted (in dollars per share)	$ 0.47	$ 0.40	$ 0.92	$ 0.82
Income (loss) per share from discontinued operations, net of tax
Basic (in dollars per share)	$ (0.01)	$ 0.06	$ 0.44	$ 0.18
Diluted (in dollars per share)	$ (0.01)	$ 0.06	$ 0.44	$ 0.18
Net income per share
Basic (in dollars per share)	$ 0.46	$ 0.46	$ 1.36	$ 1.01
Diluted (in dollars per share)	$ 0.46	$ 0.46	$ 1.36	$ 1.00
Weighted-average common shares outstanding (basic) (in shares)	5,374	5,328	5,359	5,311
Weighted-average common shares outstanding (diluted) (in shares)	5,402	5,353	5,399	5,343