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Note 11 - Stock-based Compensation (Tables) | 9 Months Ended
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Mar. 31, 2023
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Exercise Price |
Outstanding at June 30, 2022 |  |  | 34,284 |  |  | $ | 40.41 |
Granted |  |  | 5,162 |  |  |  | 13.20 |
Exercised |  |  | — |  |  |  | — |
Canceled or expired |  |  | (2,414 | ) |  |  | 174.08 |
Outstanding at March 31, 2023 |  |  | 37,032 |  |  | $ | 27.91 |
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
Range of exercise prices |  |  | Number Outstanding |  |  | Options Outstanding Weighted-Average Remaining Contractual Life (Years) |  |  | Weighted-Average Exercise Price |  |  | Number Exercisable |  |  | Options Exercisable Weighted-Average Exercise Price |
$ | 13.20 - 19.20 |  |  |  | 34,361 |  |  |  | 9.10 |  |  | $ | 18.30 |  |  |  | — |  |  | $ | — |
$ | 55.50 - 84.90 |  |  |  | 431 |  |  |  | 5.51 |  |  |  | 62.22 |  |  |  | 431 |  |  |  | 62.22 |
$ | 159.00 - 175.50 |  |  |  | 2,240 |  |  |  | 4.11 |  |  |  | 168.82 |  |  |  | 2,240 |  |  |  | 168.82 |
$ | 13.20 - 175.50 |  |  |  | 37,032 |  |  |  | 9.00 |  |  | $ | 27.91 |  |  |  | 2,671 |  |  | $ | 151.62 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  |  | Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding at June 30, 2022 |  |  | 75,873 |  |  | $ | 39.00 |
Granted |  |  | 2,150 |  |  |  | 11.83 |
Vested |  |  | (17,852 | ) |  |  | 60.60 |
Canceled or expired |  |  | (55 | ) |  |  | 60.60 |
Outstanding at March 31, 2023 |  |  | 60,116 |  |  | $ | 31.52 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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