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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Pay vs Performance Disclosure |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance
Year |  | Summary Compensation Table Total for PEO1 |  |  | Compensation Actually Paid to PEO1,2 |  |  | Average Summary Compensation Table Total for Non-PEO Named Executive Officers1 |  |  | Average Compensation Actually Paid to Non-PEO Named Executive Officers1,2 |  |  | Value of Initial $100 Investment Based on Total Shareholder Return3 |  |  | Net Income |
2025 |  | $ | 1,014,851 |  |  | $ | 1,022,411 |  |  | $ | 569,505 |  |  | $ | 574,305 |  |  | $ | 120.05 |  |  | $ | 13,279,970 |
2024 |  |  | 1,061,983 |  |  |  | 1,219,062 |  |  |  | 643,864 |  |  |  | 708,681 |  |  |  | 116.00 |  |  | $ | 11,760,896 |
2023 |  |  | 1,054,041 |  |  |  | 1,050,564 |  |  |  | 490,270 |  |  |  | 489,644 |  |  |  | 85.29 |  |  |  | 11,299,282 |
| 1 | Paul Nester was Chief Executive Officer for all three years. Timothy J. Mulvaney and Lawrence T. Oliver were the other NEOs for 2025, and C. James Shockley, Jr. and Lawrence T. Oliver were the other NEOs for 2024 and 2023. |
| 2 | SEC rules require certain adjustments be made to the Summary Compensation Table (SCT) totals to determine “Compensation Actually Paid” as reported in the Pay Versus Performance Table. Adjustments to the SCT total compensation by year to calculate Compensation Actually Paid for our PEO and the Average Compensation Actually Paid to our Non-PEO NEOs are set forth in the table below. |
PEO Total Compensation Amount | $ 1,014,851 | $ 1,061,983 | $ 1,054,041
PEO Actually Paid Compensation Amount | $ 1,022,411 | 1,219,062 | 1,050,564
Adjustment To PEO Compensation, Footnote |
|  |  | PEO |  | Average Non-PEO |
|  | 2025 | 2024 | 2023 | 2025 |  | 2024 |  | 2023 |
SCT Total | $ | 1,014,851 | $ | 1,061,983 | $ | 1,054,041 | $ | 569,505 | $ | 643,864 | $ | 490,270 |
Stock Awards per SCT |  | (288,225) |  | (274,500) |  | (321,300) |  | (116,813) |  | (105,394) |  | (111,535) |
Option Awards per SCT |  | — |  | — |  | — |  | — |  | (12,875) |  | — |
Fair value of awards in CY that remain unvested |  | 288,225 |  | 274,500 |  | 321,300 |  | 116,813 |  | 105,394 |  | 111,535 |
Change in fair value of PY awards that are outstanding and unvested |  | 15,443 |  | 99,328 |  | (16,495) |  | 5,459 |  | 34,477 |  | (5,960) |
Change in fair value of PY awards that vested during the year |  | (20,516) |  | 45,806 |  | 8,217 |  | (4,740) |  | 39,056 |  | 3,634 |
Dividend or other earnings paid during the year prior to vesting |  | 12,633 |  | 11,945 |  | 4,801 |  | 4,079 |  | 4,159 |  | 1,700 |
Compensation Actually Paid Total | $ | 1,022,411 | $ | 1,219,062 | $ | 1,050,564 | $ | 574,305 | $ | 708,681 | $ | 489,644 |
| 3 | Assumes $100 invested on October 1, 2022, the first day of the Company's fiscal 2023 year. |
Non-PEO NEO Average Total Compensation Amount | $ 569,505 | 643,864 | 490,270
Non-PEO NEO Average Compensation Actually Paid Amount | $ 574,305 | 708,681 | 489,644
Compensation Actually Paid vs. Total Shareholder Return |  |  |
Compensation Actually Paid vs. Net Income |  |  |
Total Shareholder Return Amount | $ 120.05 | 116 | 85.29
Net Income (Loss) | 13,279,970 | 11,760,896 | 11,299,282
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 288,225 | 274,500 | 321,300
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 15,443 | 99,328 | (16,495)
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | (20,516) | 45,806 | 8,217
PEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 12,633 | 11,945 | 4,801
PEO | Stock Awards Per SCT [Member] |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | (288,225) | (274,500) | (321,300)
PEO | Option Awards Per SCT [Member] |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 0 | 0 | 0
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 116,813 | 105,394 | 111,535
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 5,459 | 34,477 | (5,960)
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | (4,740) | 39,056 | 3,634
Non-PEO NEO | Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | 4,079 | 4,159 | 1,700
Non-PEO NEO | Stock Awards Per SCT [Member] |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | (116,813) | (105,394) | (111,535)
Non-PEO NEO | Option Awards Per SCT [Member] |  |  |
Pay vs Performance Disclosure |  |  |
Adjustment to Compensation, Amount | $ 0 | $ (12,875) | $ 0

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