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v3.23.2

Government assistance programs (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 31, 2023 | Jul. 31, 2020 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022 | May 31, 2021 | Mar. 27, 2020
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |  |
Contra-research and development expense |  |  |  | $ 600,000 |  | $ 600,000 |  |  |
Refundable employee retention credit |  |  |  |  |  |  |  |  | $ 800,000
Contra General And Administrative Expense |  |  |  | 200,000 |  | 200,000 |  |  |
Contra expenses |  |  | $ 0 |  | $ 0 |  |  |  |
Employee retention credit receivable |  |  | $ 208,000 |  | $ 208,000 |  | $ 847,000 |  |
Other Transaction Authority for Prototype Agreement |  |  |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |  |  |
Grants Receivable |  | $ 13,300,000 |  |  |  |  |  | $ 17,600,000 |
Expenses relating to extension of an agreement | $ 0 |  |  |  |  |  |  |  |
Payment period of reimbursement contract |  | 30 days |  |  |  |  |  |  |
Contra-research and development expense |  |  |  | $ 11,000 |  | $ 600,000 |  |  |
Reimbursement expenses received |  |  |  |  |  |  | $ 17,600,000 |  |

X
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- Definition Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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