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