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Other Revenue (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Other Revenue [Abstract]
Revenue recognized	$ 0.6

X

- References

No definition available.

+ Details

Name:	atnm_OtherRevenueAbstract
Namespace Prefix:	atnm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of revenue recognized.

+ References

No definition available.

+ Details

Name:	atnm_RevenueRecognized
Namespace Prefix:	atnm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration