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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
​ |  | Accounts Receivable, Gross |
​ |  | (in thousands) |
Balance, June 30, 2022 |  | $ | 24,000 |
Increase in accounts receivable, gross |  |  | 7,718 |
Balance, June 30, 2023 |  |  | 31,718 |
Decrease in accounts receivable, gross |  |  | (6,370 | )
Balance, June 30, 2024 |  | $ | 25,348 |
Accounts Receivable, Allowance for Credit Loss [Table Text Block] |
​ |  | Allowance for Discounts |  |  | Allowance for Chargebacks |  |  | Total Allowance |
​ |  | (in thousands) |
Balances, June 30, 2022 |  | $ | 1,301 |  |  | $ | 1,206 |  |  | $ | 2,507 |
Reduction of net revenue |  |  | 9,074 |  |  |  | 4,554 |  |  |  | 13,628 |
Payments |  |  | (8,597 | ) |  |  | (4,548 | ) |  |  | (13,145 | )
Balances, June 30, 2023 |  |  | 1,778 |  |  |  | 1,212 |  |  |  | 2,990 |
Reduction of net revenue |  |  | 4,886 |  |  |  | 3,812 |  |  |  | 8,698 |
Payments |  |  | (6,024 | ) |  |  | (3,842 | ) |  |  | (9,866 | )
Balances, June 30, 2024 |  | $ | 640 |  |  | $ | 1,182 |  |  | $ | 1,822 |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
​ |  | Percentage of Gross Revenue |  |  | Percentage of Accounts Receivable |
​ |  | June 30, |  |  | June 30, |
​ |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Customer A |  |  | 33 | % |  |  | 43 | % |  |  | 40 | % |  |  | 50 | %
Customer B |  |  | 20 | % |  |  | 18 | % |  |  | 29 | % |  |  | 19 | %
Customer C |  |  | 17 | % |  |  | 17 | % |  |  | 11 | % |  |  | 14 | %
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
​ | ​ |  | June 30, |
​ | ​ |  | 2024 |  |  | 2023 |
Warrants to purchase common stock - liability classified | (Note 16) |  |  | 6,057,766 |  |  |  | 6,498,980 |
Warrants to purchase common stock - equity classified | (Note 16) |  |  | 18,114 |  |  |  | 39,072 |
Employee stock options | (Note 15) |  |  | 146,539 |  |  |  | 52,762 |
Employee unvested restricted stock | (Note 15) |  |  | 25,360 |  |  |  | 40,996 |
Employee unvested restricted stock units | (Note 15) |  |  | 1,775 |  |  |  | 4,963 |
Total | ​ |  |  | 6,249,554 |  |  |  | 6,636,773 |

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