v3.22.1

Interest, advances and promissory notes payable (Details 5) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Interest Advances And Promissory Notes Payable |  |
Related parties | $ 1,200,170 | $ 873,666
Non-related parties | 2,910,477 | 2,701,660
Interest payable | $ 4,110,647 | $ 3,575,326

X
- References No definition available. + Details
Name: | ALRT_DisclosureInterestAdvancesAndPromissoryNotesPayableAbstract
Namespace Prefix: | ALRT_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ALRT_InterestPayableCurrentAndNoncurrents
Namespace Prefix: | ALRT_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of [accrued] interest payable to relatives of directors on all forms of debt, including trade payables, that has been incurred and is unpaid. + References No definition available. + Details
Name: | ALRT_InterestPayableRelativesOfDirectors
Namespace Prefix: | ALRT_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of [accrued] interest payable to non-related parties on all forms of debt, including trade payables, that has been incurred and is unpaid. + References No definition available. + Details
Name: | ALRT_InterestPayabletoNonrelatedParties
Namespace Prefix: | ALRT_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant