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v3.26.1

Net Loss Per Share - Additional Information (Details) - shares | Jun. 30, 2026 | Jun. 30, 2025
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Earnings Per Share [Abstract] |  |
Pre-funded warrants outstanding | 445,422 | 385,899

X
- Definition Pre-funded warrants outstanding. + References No definition available. + Details
Name: | iron_PreFundedWarrantsOutstanding
Namespace Prefix: | iron_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration