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Trade Receivables (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Trade Receivables [Abstract]
Provision for credit losses	$ 0	$ 8,000

X

- Definition

Amount of expense related to credit loss from transactions other than loan and lease transactions.

+ References

No definition available.

+ Details

Name:	alar_ProvisionForOtherCreditLoss
Namespace Prefix:	alar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ifrs-full_TradeAndOtherReceivablesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration