Exercise of pre-funded warrants shares.

No definition available.

Name:	iron_ExerciseOfPreFundedWarrantsShares
Namespace Prefix:	iron_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- 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

- Definition

Stock issued during period shares warrants exercised.

+ References

No definition available.

+ Details

Name:	iron_StockIssuedDuringPeriodSharesWarrantsExercised
Namespace Prefix:	iron_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-16

+ Details

Name:	us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-10

+ Details

Name:	us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=iron_PublicOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=iron_PrefundedWarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=iron_RegisteredDirectOfferingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Net Loss Per Share - Additional Information (Details) - shares	1 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2023	Feb. 28, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average common shares outstanding-basic			24,809,869	18,954,914
Weighted-average common shares outstanding-diluted			24,809,869	18,954,914
Exercise of pre-funded warrants shares					1,229,224
Shares issued upon exercise of warrants					1,229,221
Pre-funded warrants outstanding			204,081
Public Offering [Member] \| Prefunded Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average common shares outstanding-basic	204,081
Weighted-average common shares outstanding-diluted	204,081
Registered Direct Offerings [Member] \| Prefunded Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average common shares outstanding-basic		1,229,224
Weighted-average common shares outstanding-diluted		1,229,224