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Stock Based Compensation (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock based compensation expense | $ 41,791 | $ 33,707 | $ 94,567 | $ 80,874 |
Deferred tax benefit related to stock based compensation | 1,839 | $ 1,080 | 3,386 | $ 3,808 |
Unrecognized compensation costs | 219,311 |  | $ 219,311 |  |
Period in which compensation cost will be recognized |  |  | 2 years |  |
Deferred tax benefit related to unrecognized compensation costs | $ 8,380 |  | $ 8,380 |  |
Granted |  |  | 77,550 |  |
Outstanding | 326,112 |  | 326,112 |  | 304,662
Cash divided paid |  | $ 0.25 |  | $ 0.50 |
Aggregate intrinsic value of options exercised |  |  | $ 0 | $ 0 |
2017 Plan [Member] | Non employee directors [Member] | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Authorized shares under plan | 133,000 |  | 133,000 |  |
Percentage of total number of shares subject to options or awards, single fiscal year |  |  | 33.33% |  |
Number of shares subject to option or award, single fiscal year | 13,300 |  | 13,300 |  |
2017 Plan [Member] | Individual Employee [Member] | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares subject to option or award, single fiscal year | 15,000 |  | 15,000 |  |
Incentive Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation costs | $ 179,408 |  | $ 179,408 |  |
Non-qualified stock options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock based compensation expense | 8,757 | $ 5,143 | 16,123 | $ 18,131 |
Unrecognized compensation costs | $ 39,903 |  | $ 39,903 |  |
Stock Option Plans [Member] | 2017 Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 2 years |  |
Expiration period |  |  | 10 years |  |
Authorized shares under plan | 400,000 |  | 400,000 |  |
Granted |  |  | 303,904 |  |
Outstanding | 228,062 |  | 228,062 |  |
Shares remain available for grant | 171,938 |  | 171,938 |  |
Stock Option Plans [Member] | 2007 Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares vested and exercisable | 98,050 |  | 98,050 |  |

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