Unaudited Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Sales:
Product	$ 12,125	$ 12,767	$ 27,279	$ 28,058
Services	6,904	4,862	12,843	10,198
Total sales	19,029	17,629	40,122	38,256
Cost of sales:
Product	10,610	9,961	23,375	23,376
Services	3,704	3,419	7,209	6,103
Total cost of sales	14,314	13,380	30,584	29,479
Gross profit	4,715	4,249	9,538	8,777
Operating expenses:
Engineering and development	474	508	857	1,018
Selling, general and administrative	3,572	3,310	7,248	6,685
Total operating expenses	4,046	3,818	8,105	7,703
Operating income	669	431	1,433	1,074
Other income (expense):
Foreign exchange gain (loss)	(10)	12	(26)	8
Other income (expense), net	(26)	(13)	(44)	(30)
Total other income (expense), net	(36)	(1)	(70)	(22)
Income before income taxes	633	430	1,363	1,052
Income tax expense	191	144	460	377
Net income	442	286	903	675
Net income attributable to common stockholders	$ 434	$ 282	$ 888	$ 666
Net income per share – basic (in Dollars per share)	$ 0.13	$ 0.08	$ 0.26	$ 0.19
Weighted average shares outstanding – basic (in Shares)	3,363	3,437	3,360	3,455
Net income per share – diluted (in Dollars per share)	$ 0.13	$ 0.08	$ 0.26	$ 0.19
Weighted average shares outstanding – diluted (in Shares)	3,401	3,471	3,398	3,491