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Equity Incentive Plans (Narrative) (Details) - USD ($) |  |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2023 | Sep. 30, 2022 | Jan. 12, 2022 | Apr. 26, 2021 | Feb. 19, 2021 | Feb. 10, 2021 | Mar. 31, 2023 | Mar. 31, 2022 | Apr. 26, 2018 | Apr. 28, 2011
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Options granted |  |  |  |  |  |  |  |  |  |
Expected future expenses relating to non-vested restricted shares |  |  |  |  |  |  | $ 883,000 |  |  |
Expected future compensation expense, weighted average period for recognition |  |  |  |  |  |  | 3 years 1 month 28 days |  |  |
Stock option expense |  |  |  |  |  |  | $ 33,000 | $ 45,000 |  |
Restricted stock expense |  |  |  |  |  |  | $ 73,000 | $ 50,000 |  |
Options [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Shares underlying unexercised options |  |  |  |  |  |  | 204,440 |  |  |
Expected future compensation expense, unexercised options |  |  |  |  |  |  | $ 359,000 |  |  |
Expected future compensation expense, weighted average period for recognition |  |  |  |  |  |  | 3 years 6 months 7 days |  |  |
Options Exercisable - Number of Option Shares |  |  |  |  |  |  | 771,535 |  |  |
2018 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized for issuance |  |  |  |  |  |  |  |  | 1,000,000 |
2011 Stock Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Shares authorized for issuance |  |  |  |  |  |  |  |  |  | 900,000
Directors [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock issued | 27,000 |  | 33,000 |  |  |  |  |  |  |
Vesting period | 4 years |  | 4 years |  |  |  |  |  |  |
Directors [Member] | 2018 Equity Incentive Plan [Member] | Options [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Options granted |  |  |  |  |  | 66,000 |  |  |  |
Vesting period |  |  |  |  |  | 5 years |  |  |  |
Directors [Member] | 2018 Equity Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock issued |  |  |  |  |  | 26,400 |  |  |  |
Vesting period |  |  |  |  |  | 4 years |  |  |  |
Certain Officers [Member] | Options [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Options granted |  |  |  | 6,800 |  |  |  |  |  |
Vesting period |  |  |  | 5 years |  |  |  |  |  |
Certain Officers [Member] | 2018 Equity Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock issued |  |  |  |  | 300 |  |  |  |  |
Vesting period |  |  |  |  | 2 years |  |  |  |  |
Executive Officers [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |
Restricted stock issued |  | 36,000 |  |  |  |  |  |  |  |

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