Post-effective amendment to a registration statement that is not immediately effective upon filing

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Notes Details

Fair Value Measurements Using Significant Unobservable Inputs Level 3 (Detail)

v2.4.1.9

Fair Value Measurements Using Significant Unobservable Inputs Level 3 (Detail) (USD $)	2 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Beginning balance				$ (6,270,000)
Modification of Warrants		624,016		(1,924,186)	0
Exercises of Warrants	224,000arth_GainOnExerciseOfWarrants	0arth_GainOnExerciseOfWarrants	0arth_GainOnExerciseOfWarrants	224,000arth_GainOnExerciseOfWarrants	0arth_GainOnExerciseOfWarrants
Adjustments to estimated fair value				7,541,693		7,541,693
Ending balance		4,213,595		4,213,595		6,270,000
Fair Value, Inputs, Level 3
Beginning balance				6,270,000	0	0
Modification of Warrants				1,924,186
Exercises of Warrants				(224,000)
Issuances						10,391,693
Adjustments to estimated fair value				(3,756,591)		(4,121,693)
Ending balance		4,213,595		4,213,595		(6,270,000)
Fair Value, Inputs, Level 3 \| Convertible Debt [Member]
Beginning balance				0
Issuances				354,988
Adjustments to estimated fair value				(92,857)
Ending balance		$ 262,131		$ 262,131

- Definition

Represents the fair value of derivative liabilities in excess of proceeds

+ References

No definition available.

+ Details

Name:	arth_FairValueOfDerivativeLiabilitiesInExcessOfProceeds
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Gain on exercise of warrants.

+ References

No definition available.

+ Details

Name:	arth_GainOnExerciseOfWarrants
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Gain on warrant derivative modification.

+ References

No definition available.

+ Details

Name:	arth_GainOnWarrantDerivativeModification
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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