|
Coldstream Financing - Additional Information (Detail) (USD $)
|
1 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Apr. 19, 2013
|
Mar. 31, 2015
|
Sep. 30, 2014
|
Sep. 30, 2013
|
|
| Coldstream Financing [Line Items] | ||||
| Proceeds from issuance of private placement | $ 2,000,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement | $ 2,850,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement | ||
| Unit issued price per share. | $ 0.50arth_UnitIssuedPricePerShare | |||
| Class of warrant or right, exercise price of warrants or rights | $ 0.75us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 | |||
| Proceeds from investors in contemplation of merger | $ 2,000,000arth_ProceedsFromInvestorsInContemplationOfMerger | |||
| Common Stock, Shares Issued | 76,076,487us-gaap_CommonStockSharesIssued | 72,076,487us-gaap_CommonStockSharesIssued | 60,145,237us-gaap_CommonStockSharesIssued | |
| Coldstream Financing | ||||
| Coldstream Financing [Line Items] | ||||
| Warrants issued to purchase of common stock |
4,000,000arth_WarrantsIssuedToPurchaseOfCommonStock / arth_FinancingTypeAxis = arth_ColdstreamFinancingMember |
|||
| Common Stock, Shares Issued |
4,000,000us-gaap_CommonStockSharesIssued / arth_FinancingTypeAxis = arth_ColdstreamFinancingMember |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Proceeds from investors in contemplation of merger. No definition available.
|
| X | ||||||||||
|
- Definition
Unit issued price per share. No definition available.
|
| X | ||||||||||
|
- Definition
Warrants Issued To Purchase of common stock No definition available.
|
| X | ||||||||||
|
- Definition
Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|