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Net Loss Per Share - Additional Information (Details) - shares	Jun. 30, 2026	Jun. 30, 2025
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

X

- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration