Name:	armp_AwardAgreementInterruptionPeriod
Namespace Prefix:	armp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents about award line items.

No definition available.

Name:	armp_AwardLineItems
Namespace Prefix:	armp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The carrying amount as of the balance sheet date of award receivable.

No definition available.

Name:	armp_AwardReceivable
Namespace Prefix:	armp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of increase (decrease) in expected revenue that is not accounted for under Topic 606, classified as other.

No definition available.

Name:	armp_IncreaseDecreaseInExpectedRevenueNotFromContractWithCustomerOther
Namespace Prefix:	armp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The aggregate benefit incurred during the reporting period as a result of research and development activities.

No definition available.

Name:	armp_ResearchAndDevelopmentBenefit
Namespace Prefix:	armp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The threshold amount of development award under the award agreement.

No definition available.

Name:	armp_ThresholdDevelopmentAward
Namespace Prefix:	armp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Unbilled award receivable.

No definition available.

Name:	armp_UnbilledAwardReceivable
Namespace Prefix:	armp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of revenue that is not accounted for under Topic 606.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2