Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Oct. 31, 2020	9,814,118
Balance at Oct. 31, 2020	$ 98	$ 22,946	$ 9,020	$ 32,064
Exercise of stock options (in shares)	156,701
Exercise of stock options	$ 1	484		485
Stock-based compensation expense		260		260
Tax withholding related to vesting of restricted stock (in shares)	(2,279)
Tax withholding related to vesting of restricted stock		(11)		(11)
Consolidated net income			4,442	4,442
Issuance of restricted stock (in shares)	36,834
Issuance of restricted stock	$ 1	(1)
Forfeiture of restricted stock (in shares)	(4,318)
Balance (in shares) at Apr. 30, 2021	10,001,056
Balance at Apr. 30, 2021	$ 100	23,678	13,462	37,240
Balance (in shares) at Jan. 31, 2021	9,962,456
Balance at Jan. 31, 2021	$ 100	23,441	8,617	32,158
Exercise of stock options (in shares)	38,512
Exercise of stock options		100		100
Stock-based compensation expense		137		137
Tax withholding related to vesting of restricted stock (in shares)	88
Consolidated net income			4,845	4,845
Balance (in shares) at Apr. 30, 2021	10,001,056
Balance at Apr. 30, 2021	$ 100	23,678	13,462	37,240
Balance (in shares) at Oct. 31, 2021	10,058,571
Balance at Oct. 31, 2021	$ 101	24,301	15,201	39,603
Exercise of stock options (in shares)	22,927
Exercise of stock options	$ 1	56		57
Stock-based compensation expense		307		307
Tax withholding related to vesting of restricted stock (in shares)	(2,479)
Tax withholding related to vesting of restricted stock		(16)		(16)
Consolidated net income			226	226
Issuance of restricted stock (in shares)	39,666
Balance (in shares) at Apr. 30, 2022	10,118,685
Balance at Apr. 30, 2022	$ 102	24,648	15,427	40,177
Balance (in shares) at Jan. 31, 2022	10,096,175
Balance at Jan. 31, 2022	$ 101	24,427	14,924	$ 39,452
Exercise of stock options (in shares)	22,927			22,927
Exercise of stock options	$ 1	56		$ 57
Stock-based compensation expense		168		168
Tax withholding related to vesting of restricted stock (in shares)	(417)
Tax withholding related to vesting of restricted stock		(3)		(3)
Consolidated net income			503	503
Balance (in shares) at Apr. 30, 2022	10,118,685
Balance at Apr. 30, 2022	$ 102	$ 24,648	$ 15,427	$ 40,177