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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, 2018 9,291,201      
Balance at Oct. 31, 2018 $ 93 $ 20,974 $ 6,716 $ 27,783
Exercise of stock options (in shares) 99,150      
Exercise of stock options $ 1 413 414
Stock-based compensation expense 260 260
Consolidated net income (loss) 2,739 2,739
Dividends (560) (560)
Balance (in shares) at Jul. 31, 2019 9,390,351      
Balance at Jul. 31, 2019 $ 94 21,647 8,895 30,636
Balance (in shares) at Apr. 30, 2019 9,360,351      
Balance at Apr. 30, 2019 $ 94 21,522 8,044 29,660
Exercise of stock options (in shares) 30,000      
Exercise of stock options 57 57
Stock-based compensation expense 68 68
Consolidated net income (loss) 1,038 1,038
Dividends (187) (187)
Balance (in shares) at Jul. 31, 2019 9,390,351      
Balance at Jul. 31, 2019 $ 94 21,647 8,895 30,636
Balance (in shares) at Oct. 31, 2019 9,462,267      
Balance at Oct. 31, 2019 $ 95 21,949 9,489 $ 31,533
Exercise of stock options (in shares) 241,209     241,209
Exercise of stock options $ 2 443 $ 445
Stock-based compensation expense 367 367
Issuance of common shares (in shares) 13,191      
Issuance of common shares 82 82
Consolidated net income (loss) (240) (240)
Issuance of restricted stock (in shares) 54,850      
Issuance of restricted stock $ 1 (1)
Dividends (388) (388)
Balance (in shares) at Jul. 31, 2020 9,771,517      
Balance at Jul. 31, 2020 $ 98 22,840 8,861 31,799
Balance (in shares) at Apr. 30, 2020 9,758,062      
Balance at Apr. 30, 2020 $ 98 22,652 8,943 31,693
Exercise of stock options (in shares) 12,339      
Exercise of stock options 22 22
Stock-based compensation expense 161 161
Issuance of common shares (in shares) 1,116      
Issuance of common shares 5 5
Consolidated net income (loss) (82) (82)
Balance (in shares) at Jul. 31, 2020 9,771,517      
Balance at Jul. 31, 2020 $ 98 $ 22,840 $ 8,861 $ 31,799