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Equity Incentive Plans (Tables) | 3 Months Ended
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Sep. 30, 2022
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
Forfeited/Cancelled |  | (74) | ​ | ​ | 126.84 |  |
Expired |  | (26) | ​ | ​ | 157.84 |  |
Outstanding at September 30, 2022 |  | 3,799 | ​ | $ | 211.67 |  | 7.44
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at September 30, 2022 |  | 2,666 | ​ | $ | 231.99 |  | 7.41
​ ​
Restricted stock activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2022 |  | 80,373 | ​ | $ | 148.91
Granted |  | 325 | ​ | ​ | 13.40
Vested |  | (10,545) | ​ | ​ | 115.60
Forfeited/Cancelled | ​ | (1,993) | ​ | ​ | 149.48
Unvested at September 30, 2022 |  | 68,160 | ​ | $ | 153.40
​ ​
Restricted stock units activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  |  |  | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average Grant
​ | ​ | Number of | ​ | Date Fair
​ | ​ | Shares | ​ | Value
Unvested at June 30, 2022 |  | 8,500 | ​ | $ | 25.88
Granted | ​ | — | ​ | ​ | —
Vested |  | — | ​ | ​ | —
Forfeited | ​ | — | ​ | ​ | —
Unvested at September 30, 2022 |  | 8,500 | ​ | $ | 25.88
​ ​
Stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​
​ | ​ | September 30, | ​
​ |  | 2022 |  | 2021 | ​
​ | ​ | ​ | (in thousands) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cost of sales | ​ | $ | 5 | ​ | $ | 9 | ​
Research and development | ​ | ​ | 9 | ​ | ​ | 319 | ​
Selling and marketing | ​ | ​ | 3 | ​ | ​ | 9 | ​
General and Administrative | ​ |  | 1,160 | ​ |  | 1,182 | ​
Total stock-based compensation expense | ​ | $ | 1,177 | ​ | $ | 1,519 | ​

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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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