Summarized Quarterly Results of Operations (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Summarized quarterly results of operations
Net sales	$ 32,959	$ 30,999	$ 29,044	$ 26,652	$ 31,880	$ 28,672	$ 28,004	$ 27,445	$ 119,654	$ 116,001	$ 102,900
Cost of goods sold									93,729	87,986	81,094
Gross profit	6,894	7,157	6,304	5,570	8,534	7,713	5,906	5,862	25,925	28,015	21,806
Income before income tax provision									8,356	13,846	9,168
Income tax provision									2,753	4,088	2,861
Income from continuing operations	955	1,983	1,511	1,154	3,947	2,865	1,769	1,177	5,603	9,758	6,307
Income (loss) from discontinued operations, net of tax	(212)	(76)	(85)	(207)	(1,041)	(387)	(334)	2,238	(580)	476	241
Net Income	$ 743	$ 1,907	$ 1,426	$ 947	$ 2,906	$ 2,478	$ 1,435	$ 3,415	$ 5,023	$ 10,234	$ 6,548
Net income per share - basic [Abstract]
Basic (in dollars per share)	$ 0.17	$ 0.37	$ 0.28	$ 0.22	$ 0.74	$ 0.53	$ 0.33	$ 0.22	$ 1.04	$ 1.82	$ 1.19
Diluted (in dollars per share)	$ 0.17	$ 0.37	$ 0.28	$ 0.21	$ 0.73	$ 0.53	$ 0.33	$ 0.22	$ 1.03	$ 1.81	$ 1.18
Net income per share - diluted [Abstract]
Basic (in dollars per share)	$ (0.04)	$ (0.01)	$ (0.02)	$ (0.04)	$ (0.20)	$ (0.07)	$ (0.06)	$ 0.42	$ (0.11)	$ 0.09	$ 0.04
Diluted (in dollars per share)	$ (0.04)	$ (0.01)	$ (0.02)	$ (0.04)	$ (0.19)	$ (0.07)	$ (0.06)	$ 0.41	$ (0.11)	$ 0.09	$ 0.04
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 0.13	$ 0.36	$ 0.26	$ 0.18	$ 0.54	$ 0.46	$ 0.27	$ 0.64	$ 0.93	$ 1.91	$ 1.23
Diluted (in dollars per share)	$ 0.13	$ 0.36	$ 0.26	$ 0.17	$ 0.54	$ 0.46	$ 0.27	$ 0.63	$ 0.92	$ 1.90	$ 1.22