Note 6 - Stock-based Compensation (Tables)
|
9 Months Ended |
12 Months Ended |
Jun. 30, 2023 |
Sep. 30, 2022 |
| Notes Tables |
|
|
| Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
| |
|
Option
Shares
Outstanding
|
|
|
Weighted
Average
Exercise
Price
|
|
|
Weighted
Average
Remaining
Contractual
Term
(years)
|
|
|
Aggregate
Intrinsic
Value
|
|
|
Outstanding at September 30, 2022
|
|
|
98,626 |
|
|
$ |
52.00 |
|
|
|
1.36 |
|
|
$ |
16,900 |
|
|
Awarded
|
|
|
24,500 |
|
|
$ |
8.00 |
|
|
|
|
|
|
|
|
|
|
Forfeited/Cancelled
|
|
|
(19,101 |
)
|
|
$ |
70.00 |
|
|
|
|
|
|
|
|
|
|
Outstanding at June 30, 2023
|
|
|
104,025 |
|
|
$ |
39.00 |
|
|
|
5.72 |
|
|
— |
|
|
Vested at June 30, 2023
|
|
|
79,409 |
|
|
$ |
48.00 |
|
|
|
4.85 |
|
|
— |
|
|
Vested and expected to vest at June 30, 2023
|
|
|
104,325 |
|
|
$ |
39.00 |
|
|
|
5.72 |
|
|
— |
|
|
| |
|
Option |
|
|
Weighted Average |
|
|
Average Remaining |
|
|
Weighted Aggregate
|
|
| |
|
Shares |
|
|
Exercise |
|
|
Contractual |
|
|
Intrinsic
|
|
| |
|
Outstanding
|
|
|
Price
|
|
|
Term (years)
|
|
|
Value
|
|
|
Outstanding at September 30, 2021
|
|
|
124,495 |
|
|
$ |
58.00 |
|
|
|
1.83 |
|
|
$ |
140,151 |
|
|
Awarded
|
|
|
6,625 |
|
|
$ |
6.00 |
|
|
|
|
|
|
|
|
|
|
Forfeited/Cancelled
|
|
|
(32,494 |
)
|
|
$ |
70.00 |
|
|
|
|
|
|
|
|
|
|
Outstanding at September 30, 2022
|
|
|
98,626 |
|
|
$ |
52.00 |
|
|
|
1.46 |
|
|
$ |
16,900 |
|
|
Vested at September 30, 2022
|
|
|
82,522 |
|
|
$ |
58.00 |
|
|
|
1.52 |
|
|
$ |
— |
|
|
Vested and expected to vest at September 30, 2022
|
|
|
98,626 |
|
|
$ |
52.00 |
|
|
|
1.46 |
|
|
$ |
16,900 |
|
|
| Nonvested Restricted Stock Shares Activity [Table Text Block] |
| |
|
Three months Ended
|
|
| |
|
June 30, 2023
|
|
|
June 30, 2022
|
|
|
Non Vested at March 31, 2023 and 2022
|
|
|
— |
|
|
|
1,250 |
|
|
Vested
|
|
|
— |
|
|
|
(375 |
)
|
|
Non Vested at June 30, 2023 and 2022
|
|
|
— |
|
|
|
875 |
|
| |
|
Nine months Ended
|
|
| |
|
June 30, 2023
|
|
|
June 30, 2022
|
|
|
Non Vested at September 30, 2022 and 2021
|
|
|
250 |
|
|
|
2,250 |
|
|
Vested
|
|
|
(250 |
)
|
|
|
(1,375 |
)
|
|
Non Vested at June 30, 2023 and 2022
|
|
|
— |
|
|
|
875 |
|
|
| |
|
2022 |
|
|
2021 |
|
|
Non Vested at September 30, 2021 and 2020
|
|
|
2,250 |
|
|
|
|
|
|
Awarded
|
|
|
— |
|
|
|
5,000 |
|
|
Vested
|
|
|
(2,000 |
) |
|
|
(2,750 |
) |
|
Forfeited
|
|
|
— |
|
|
|
— |
|
|
Non Vested at September 30, 2022 and 2021
|
|
|
250 |
|
|
|
2,250 |
|
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] |
| |
|
Three months Ended
|
|
| |
|
June 30, 2023
|
|
|
June 30, 2022
|
|
|
Non Vested at March 31, 2023 and 2022
|
|
$ |
— |
|
|
$ |
20.00 |
|
|
Vested
|
|
|
— |
|
|
|
(20.00 |
)
|
|
Non Vested at June 30, 2023 and 2022
|
|
$ |
— |
|
|
$ |
20.00 |
|
| |
|
Nine months Ended
|
|
| |
|
June 30, 2023
|
|
|
June 30, 2022
|
|
|
Non Vested at September 30, 2022 and 2021
|
|
$ |
18.00 |
|
|
$ |
20.00 |
|
|
Vested
|
|
|
(18.00 |
)
|
|
|
(20.00 |
)
|
|
Non Vested at June 30, 2023 and 2022
|
|
$ |
— |
|
|
$ |
20.00 |
|
|
| |
|
2022 |
|
|
2021 |
|
|
Non Vested at September 30, 2021 and 2020
|
|
$ |
20.00 |
|
|
$ |
— |
|
|
Awarded
|
|
|
|
|
|
|
26.00 |
|
|
Vested
|
|
|
(20.00 |
) |
|
|
(32.00 |
) |
|
Forfeited
|
|
|
|
|
|
|
— |
|
|
Non Vested at September 30, 2022 and 2021
|
|
$ |
18.00 |
|
|
$ |
20.00 |
|
|