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Equity Incentive Plans (Tables) | 12 Months Ended
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Jun. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​ |  | Weighted
​ | ​ | ​ | ​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Weighted | ​ | Remaining
​ | ​ | Number of | ​ | Average | ​ | Contractual
​ | ​ | Options | ​ | Exercise Price | ​ | Life in Years
Outstanding June 30, 2022 |  | 3,899 | ​ | $ | 209.70 |  | 7.77
Granted |  | 49,212 | ​ | ​ | 4.00 |  |
Forfeited/Cancelled |  | (172) | ​ | ​ | 128.99 |  |
Expired |  | (177) | ​ | ​ | 131.39 |  |
Outstanding at June 30, 2023 |  | 52,762 | ​ | $ | 18.37 |  | 9.06
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at June 30, 2023 |  | 3,022 | ​ | $ | 225.74 |  | 6.17
Stock options outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ |  |  |  | ​ | ​ |  | Weighted |  |  |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Weighted | ​ | Contractual | ​ | ​ | ​ | ​ | ​
Range of | ​ | Number of | ​ | Average | ​ | Life of | ​ | Number of | ​ | Weighted
Exercise | ​ | Options | ​ | Exercise | ​ | Options | ​ | Options | ​ | Average
Prices | ​ | Outstanding | ​ | Price | ​ | Outstanding | ​ | Exercisable | ​ | Exercise Price
$ | 4.00 |  | 49,212 | ​ | $ | 4.00 |  | 9.26 |  | — | ​ | $ | —
$ | 123.16 - 290.00 |  | 3,550 | ​ | $ | 217.52 |  | 6.26 |  | 3,022 | ​ | $ | 225.74
​ | ​ |  | 52,762 | ​ | $ | 18.37 |  | 9.06 |  | 3,022 | ​ | $ | 225.74
Restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2022 |  | 80,373 | ​ | $ | 148.91
Granted |  | 6,825 | ​ | ​ | 3.79
Vested |  | (42,434) | ​ | ​ | 126.98
Forfeited/Cancelled | ​ | (6,689) | ​ | ​ | 135.66
Unvested at June 30, 2023 |  | 38,075 | ​ | $ | 142.20
Restricted stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2022 |  | 8,500 | ​ | $ | 25.88
Vested |  | (3,537) | ​ | ​ | 26.26
Unvested at June 30, 2023 |  | 4,963 | ​ | $ | 25.62
Stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended
​ | ​ | June 30,
​ | ​ | 2023 |  | 2022
​ | ​ | (In thousands)
Cost of sales | ​ | $ | 28 | ​ | $ | 31
Research and development | ​ | ​ | 30 | ​ | ​ | 536
Selling and marketing | ​ | ​ | 23 | ​ | ​ | 24
General and Administrative | ​ |  | 5,965 | ​ |  | 4,657
Total stock-based compensation expense | ​ | $ | 6,046 | ​ | $ | 5,248

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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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