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Stock Options - Reflects activity (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2020
2012 Employee Stock Option Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding, beginning of year | 117,840 | 72,500 | 72,500
Granted | 0 | 8,000 |
Exercised | 0 | 0 |
Outstanding, end of period | 117,840 | 80,500 | 117,840
Exercisable, end of period | 37,400 | 35,400 |
Weighted average fair value at grant date of options granted |  | $ 15.17 |
Total intrinsic value of options outstanding | $ 706,000 | $ 1,052,000 |
Total intrinsic value of options exercisable | $ 399,000 | $ 599,000 |
Outstanding, beginning of year, weighted average exercise price | $ 18.84 | $ 11.01 | $ 11.01
Granted, weighted average exercise price |  | 26.06 |
Outstanding, end of period, weighted average exercise price | 18.84 | 12.51 | $ 18.84
Exercisable, end of period, weighted average exercise price | $ 13.73 | $ 8.62 |
2012 Non-Employee Stock Option Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding, beginning of year | 12,000 | 10,200 | 10,200
Granted | 0 | 0 |
Exercised | 0 | 0 |
Outstanding, end of period | 12,000 |  | 12,000
Exercisable, end of period | 5,760 | 10,200 |
Total intrinsic value of options outstanding | $ 159,000 | $ 179,000 |
Total intrinsic value of options exercisable | $ 87,000 | $ 58,000 |
Outstanding, beginning of year, weighted average exercise price | $ 10.29 | $ 7.99 | $ 7.99
Exercised, weighted average exercise price | 0 |  |
Outstanding, end of period, weighted average exercise price | 10.29 |  | $ 10.29
Exercisable, end of period, weighted average exercise price | $ 8.35 | $ 7.99 |
2018 Non-Employee Stock Option Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding, beginning of year | 48,400 | 15,200 | 15,200
Granted | 0 |  |
Exercised | 0 | 0 |
Outstanding, end of period | 48,400 | 15,200 | 48,400
Exercisable, end of period | 12,240 | 2,400 |
Total intrinsic value of options outstanding | $ 114,000 | $ 142,000 |
Total intrinsic value of options exercisable | $ 41,000 | $ 22,000 |
Outstanding, beginning of year, weighted average exercise price | $ 23.48 | $ 16.20 | $ 16.20
Outstanding, end of period, weighted average exercise price | 23.48 | 16.20 | $ 23.48
Exercisable, end of period, weighted average exercise price | $ 21.96 | $ 16.20 |
2020 Non-Employee Stock Option Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Granted | 5,000 |  |
Exercised | 0 | 0 |
Outstanding, end of period | 5,000 |  |
Exercisable, end of period | 1,000 |  |
Weighted average fair value at grant date of options granted | $ 12.20 |  |
Total intrinsic value of options outstanding | $ 4,000 |  |
Total intrinsic value of options exercisable | $ 1,000 |  |
Granted, weighted average exercise price | $ 22.80 |  |
Outstanding, end of period, weighted average exercise price | 22.80 |  |
Exercisable, end of period, weighted average exercise price | $ 22.80 |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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