v2.4.0.8

7. Related party transactions and balances (Details) - Related Party Transactions (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Related Party Transactions [Abstract] |  |
Promissory notes issued to relatives of the Chairman | $ 76,557 | $ 76,557
Lines of credit from Chairman and relatives of the Chairman | 170,629 | 125,884
Consulting fees to a Company controlled by director of the Company in his role as a consultant to the Company | 31,500 | 20,000
Consulting services rendered by an individual who is a director and officer of the Company | $ 47,400 | $ 47,400

X
- Definition Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support. + References No definition available. + Details
Name: | alrt_ConsultingFeesToADirectorOfTheCompanyInHisRolesAsAConsultantToTheCompany
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of interest expense incurred during the period on a debt or other obligation to a related party. + References No definition available. + Details
Name: | alrt_InterestExpenseRelatedPartyPromissoryNotesIssuedToRelativesOfChairman
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cost of borrowed funds accounted for as interest that was charged against earnings during the period. + References No definition available. + Details
Name: | alrt_LinesOfCreditFromTheChairmanChiefExecutiveOfficer
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The value of the options granted for serving in an administrative position for the benefit of the entity. + References No definition available. + Details
Name: | alrt_StockOptionsAndShareBasedPaymentsToADirectorAndOfficer
Namespace Prefix: | alrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration