v2.4.0.8

3. Interest, Advances and Promissory Notes Payable (Details) - Unrelated Lenders Activity (USD $) | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Unsecured promissory notes payable to unrelated lenders: |  |
| $ 2,424,353 | $ 2,424,353
Promissory notes payable, secured by a guarantee from a director and relative of a director, bearing interest at 1% per month, with $200,000 repayable on July 31, 2003, all due on demand | 230,000 | 230,000
| $ 2,424,353 | $ 2,424,353

X
- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable due to a lender secured by a guarantee from a director and relative of a director, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
Name: | alrt_PromissoryNotesPayableSecuredbyaGuaranteefromaDirectorandRelativeofaDirector
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable due to unrelated lenders, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
Name: | alrt_PromissoryNotesPayableUnrelatedLender
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total of the current and noncurrent portions, aggregate carrying amount of all types of notes payable due to unrelated lenders, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References No definition available. + Details
Name: | alrt_TotalPromissoryNotesPayableUnrelatedLender
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | alrt_UnsecuredPromissoryNotesPayableToUnrelatedLendersAbstract
Namespace Prefix: | alrt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration