Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Net sales	$ 10,390	$ 13,626	$ 22,804	$ 24,273
Cost of sales	7,804	9,532	16,965	17,033
Gross profit	2,586	4,094	5,839	7,240
Operating expenses:
Engineering	528	332	1,124	652
Selling and general	2,246	2,400	4,902	4,439
Total operating expenses	2,774	2,732	6,026	5,091
Operating (loss) income	(188)	1,362	(187)	2,149
Other income	7	14	18	35
(Loss) income before provision (benefit) for income taxes	(181)	1,376	(169)	2,184
Provision (benefit) for income taxes	3	315	(11)	483
Consolidated net (loss) income	$ (184)	$ 1,061	$ (158)	$ 1,701
(Loss) earnings per share
Basic (in dollars per share)	$ (0.02)	$ 0.11	$ (0.02)	$ 0.18
Diluted (in dollars per share)	$ (0.02)	$ 0.11	$ (0.02)	$ 0.17
Weighted average shares outstanding
Basic (in shares)	9,704,880	9,356,660	9,633,935	9,332,665
Diluted (in shares)	9,704,880	9,837,964	9,633,935	9,837,718