Name:	arth_CommitmentsAndContingenciesLineItems
Namespace Prefix:	arth_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

It represents the value license maintained costs, paid during the period.

No definition available.

Name:	arth_LicenseMaintenanceCosts
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash payments to lessor's per month for use of assets under operating leases.

No definition available.

Name:	arth_PaymentsForRentMonthlyPayments
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Cash payments to lessor's per square foot for use of assets under operating leases.

No definition available.

Name:	arth_PaymentsForRentPerSquareFoot
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of cash paid for deposits on goods and services during the period; excludes time deposits and deposits with other institutions, which pertain to financial service entities.

No definition available.

Name:	arth_PaymentsForSecurityDeposits
Namespace Prefix:	arth_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Area of land held.

No definition available.

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

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

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.