Restructuring and related cost expected number of positions eliminated period percent.

No definition available.

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Namespace Prefix:	aktx_
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Balance Type:	na
Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Period Type:

- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=aktx_SeriesWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=aktx_SeriesBWarrantsMember
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Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2025	May 31, 2024
Subsequent Event [Line Items]
Expected percentage of reduction of workforce		67.00%
Private Placement \| Subsequent Event \| American Depository Shares
Subsequent Event [Line Items]
Remaining cash proceeds	$ 4.0
Pre-Funded Warrants \| Private Placement \| Subsequent Event \| American Depository Shares
Subsequent Event [Line Items]
Number of warrants to purchase shares	1,650,000
Series A warrants \| Private Placement \| Subsequent Event \| American Depository Shares
Subsequent Event [Line Items]
Number of warrants to purchase shares	6,057,405
Series B warrants \| Private Placement \| Subsequent Event \| American Depository Shares
Subsequent Event [Line Items]
Number of warrants to purchase shares	4,354,595