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Note 11 - Stock-based Compensation (Tables) | 6 Months Ended
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Dec. 31, 2022
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 December 31, 2022 |  |  | 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 |  |  |  | 9.35 |  |  | $ | 18.30 |  |  |  | — |  |  | $ | — |
$ | 55.50 - 84.90 |  |  |  | 431 |  |  |  | 5.76 |  |  |  | 62.22 |  |  |  | 431 |  |  |  | 62.22 |
$ | 159.00 - 175.50 |  |  |  | 2,240 |  |  |  | 4.36 |  |  |  | 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 |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Canceled or expired |  |  | (55 | ) |  |  | 60.60 |
Outstanding at December 31, 2022 |  |  | 75,818 |  |  | $ | 38.93 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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