Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Net sales	$ 116,001	$ 102,900
Cost of goods sold	87,986	81,094
Gross margin	28,015	21,806
Selling, general and administrative expenses	12,262	9,906
Amortization of intangible assets	2,076	2,879
(Gain) on disposal of operating assets	(89)	0
Operating income	13,766	9,021
Interest income	(24)	(27)
Interest expense	342	471
Foreign currency exchange (gain) loss, net	23	(16)
Other income, net	(421)	(575)
Income from continuing operations before income tax provision	13,846	9,168
Income tax provision	4,088	2,861
Income from continuing operations	9,758	6,307
Income from discontinued operations, net of tax	476	241
Net income	$ 10,234	$ 6,548
Earnings Per Share From Continuing Operations [Abstract]
Basic (in dollars per share)	$ 1.82	$ 1.19
Diluted (in dollars per share)	$ 1.81	$ 1.18
Earnings Per Share From Discontinued Operations [Abstract]
Basic (in dollars per share)	$ 0.09	$ 0.04
Diluted (in dollars per share)	$ 0.09	$ 0.04
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 1.91	$ 1.23
Diluted (in dollars per share)	$ 1.90	$ 1.22
Weighted Average Number of Common Shares [Abstract]
Weighted-average number of common shares (basic shares)	5,363	5,317
Weighted-average number of common shares (diluted shares)	5,401	5,380