Paycheck Protection Program Loan (Narrative) (Details) - USD ($)		3 Months Ended	9 Months Ended
Apr. 20, 2020	Sep. 30, 2021	Sep. 30, 2021
Gain upon extinguishment of Paycheck Protection Program loan		$ 700,000	$ 722,000
Unsecured Debt [Member] \| Payment Protection Program Note [Member]
Proceeds from unsecured notes payable	$ 717,000
Interest rate (as a percent)	1.00%

Gain (loss) on extinguishment of paycheck protection program loan.

No definition available.

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Namespace Prefix:	armp_
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Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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- Definition

The cash inflow from borrowings supported by a written promise to pay an obligation that is uncollateralized (where debt is not backed by the pledge of collateral).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type: