No definition available.

Name:	alar_DescriptionOfExpectedTermShareOptionsGranted
Namespace Prefix:	alar_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The option life of share options granted.

+ References

No definition available.

+ Details

Name:	alar_ExpectedTermLifeOptionGranted
Namespace Prefix:	alar_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Expected volatility shares option granted.

+ References

No definition available.

+ Details

Name:	alar_ExpectedVolatilitySharesOptionGranted
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Extend the tranches.

+ References

No definition available.

+ Details

Name:	alar_ExtendedTranches
Namespace Prefix:	alar_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the amount of finance expenses.

+ References

No definition available.

+ Details

Name:	alar_FinanceExpenses
Namespace Prefix:	alar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Ordinary shares exceeds percentage.

+ References

No definition available.

+ Details

Name:	alar_OrdinarySharesExceedsPercentage
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Original tranches.

+ References

No definition available.

+ Details

Name:	alar_OriginalTranches
Namespace Prefix:	alar_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the amount of original tranches due.

+ References

No definition available.

+ Details

Name:	alar_OriginalTranchesAmount
Namespace Prefix:	alar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of fair value of warrants on pro rata basis.

+ References

No definition available.

+ Details

Name:	alar_PercentageOfFairValueOfWarrantsOnProRataBasis
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of repayment amount.

+ References

No definition available.

+ Details

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

- Definition

Percentage of shares vested.

+ References

No definition available.

+ Details

Name:	alar_PercentageOfSharesVested
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of warrants cancelled.

+ References

No definition available.

+ Details

Name:	alar_PercentageOfWarrantsCancelled
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Repayments of debt installments percentage.

+ References

No definition available.

+ Details

Name:	alar_RepaymentsOfDebtInstallmentsPercentage
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

+ References

No definition available.

+ Details

Name:	alar_RiskFreeInterestRateShareOptionGranted
Namespace Prefix:	alar_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	alar_StrategicFundingLineItems
Namespace Prefix:	alar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the amount of total consideration warrants.

+ References

No definition available.

+ Details

Name:	alar_TotalConsiderationWarrants
Namespace Prefix:	alar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represent the amount of warrant canceled.

+ References

No definition available.

+ Details

Name:	alar_WarrantCanceled
Namespace Prefix:	alar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Warrants granted.

+ References

No definition available.

+ Details

Name:	alar_WarrantsGranted
Namespace Prefix:	alar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of additional other provisions made. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2023-01-01
-Paragraph 84
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2023-en-r&anchor=para_84_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_AdditionalProvisionsOtherProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of current debt instruments issued. [Refer: Debt instruments issued]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_CurrentDebtInstrumentsIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage derivatives contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]] [Contrast: Derivatives, amount contributed to fair value of plan assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2023-01-01
-Paragraph 142
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_142_e&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DerivativesPercentageContributedToFairValueOfPlanAssets
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DescriptionOfExpectedVolatilityShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

+ References

+ Details

Name:	ifrs-full_DescriptionOfRiskFreeInterestRateShareOptionsGranted
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate determined on the date that the entity reclassifies its financial liabilities out of fair value through profit or loss category as a result of the transition to IFRS 9. [Refer: Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 42N
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_42N_a&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_EffectiveInterestRateDeterminedOnDateOfReclassificationOfFinancialLiabilitiesFirstApplicationOfIFRS9
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The exercise price of share options granted.

+ References

+ Details

Name:	ifrs-full_ExercisePriceShareOptionsGranted2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The fair value of receivables acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B64
-Subparagraph h
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_h_i&doctype=Appendix&subtype=B
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_FairValueOfAcquiredReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of contractual undiscounted cash flows for gross commitments to receive a loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph B11D
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_B11D_e&doctype=Appendix&subtype=B
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_GrossLoanCommitments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of net debt of the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_NetDebt
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_NumberOfSharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of shares issued by the entity, for which full payment has been received.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 79
-Subparagraph a
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_79_a_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_NumberOfSharesIssuedAndFullyPaid
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for debt issue costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2023-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_17&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_PaymentsForDebtIssueCosts
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

A component of equity representing components of convertible instruments classified as equity.

+ References

+ Details

Name:	ifrs-full_ReserveOfEquityComponentOfConvertibleInstruments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from adjustments for the current tax of prior periods. [Refer: Average effective tax rate; Applicable tax rate; Adjustments for current tax of prior periods]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 12
-IssueDate 2023-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_TaxRateEffectOfAdjustmentsForCurrentTaxOfPriorPeriods
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of receivables due from related parties. [Refer: Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 78
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_TradeAndOtherReceivablesDueFromRelatedParties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ifrs-full_AccountingEstimatesAxis=alar_TranchesOneToTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AccountingEstimatesAxis=alar_TranchesThreeToEightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AccountingEstimatesAxis=alar_TrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=alar_SeriesAWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=alar_SeriesBWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=alar_SeriesCWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_AccountingEstimatesAxis=alar_AccountingTreatmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=alar_SeriesDWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Strategic Funding (Details)					1 Months Ended	12 Months Ended
Strategic Funding (Details)	Sep. 07, 2023 USD ($)	Mar. 01, 2023 $ / shares shares	Jan. 30, 2023 USD ($)	Dec. 01, 2022 $ / shares shares	Oct. 27, 2022 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 shares	Sep. 14, 2023 shares	Sep. 01, 2023 shares	Nov. 30, 2022 USD ($)	Aug. 08, 2022 USD ($)	Dec. 27, 2021 shares
Strategic Funding [Line Items]
Funded amount (in Dollars)											$ 4,000,000
Cash commitment (in Dollars)					$ 4,000,000					$ 333
Additional funding (in Dollars)					$ 2,000,000
Debt installments percentage					100.00%
Weighted effective interest rate						34.92%
Warrants granted (in Shares) \| shares						5,006,386
Warrants issued (in Shares) \| shares						2,393,740	140,135	187,225				100,000
Exercise price per share (in Dollars per share) \| $ / shares						$ 2.72
Shares vested
Ordinary shares exceeds percentage						150.00%
Due amount (in Dollars)			$ 111,000
Total amount (in Dollars)			2,000,000
Original tranche amount (in Dollars)			$ 333,000
Amount repaid (in Dollars)	$ 100,000
Repayment amount percentage (in Dollars)	$ 100
Extend tranches	30 months
Original tranches	24 months
Total consideration warrants (in Dollars)	$ 500,000
Canceled warrant (in Dollars)	366,000
Risk free interest rate						5.32%	4.59%
Expected term						2 years 6 months
Expected volatility						91.00%	69.28%
Other equity reserve (in Dollars)	274,000
Profit or loss as finance expense (in Dollars)	$ 349,000
Effective interest rate	18.70%
Tranches 1-2 [Member]
Strategic Funding [Line Items]
Cash commitment (in Dollars)											2,000,000
Tranches 3-8 [Member]
Strategic Funding [Line Items]
Cash commitment (in Dollars)											$ 2,000,000
Tranche 2 [Member]
Strategic Funding [Line Items]
Cash commitment (in Dollars)					$ 1,000,000
Bottom of range [member]
Strategic Funding [Line Items]
Risk free interest rate						3.14%
Expected term						3 years 3 days
Expected volatility rate						95.76%
Risk free interest rate						4.01%	4.11%
Expected volatility						81.07%	69.93%
Top of range [member]
Strategic Funding [Line Items]
Risk free interest rate						4.30%
Expected term						3 years 10 months 6 days
Expected volatility rate						99.96%
Risk free interest rate						4.92%	4.73%
Expected volatility						94.33%	98.87%
Minimum [Member]
Strategic Funding [Line Items]
Risk free interest rate	4.66%
Expected term	1 year 11 months 4 days
Expected volatility	77.29%
Maximum [Member]
Strategic Funding [Line Items]
Risk free interest rate	4.99%
Expected term	2 years 11 months 23 days
Expected volatility	79.22%
Series A Warrants [Member]
Strategic Funding [Line Items]
Warrants issued (in Shares) \| shares				2,068,966
Exercise price per share (in Dollars per share) \| $ / shares				$ 0.725
Shares vested				1,034,483
Percentage of shares are fully vested				50.00%
Remaining shares vested (in Shares) \| shares				1,034,438
Percentage of warrants cancelled						50.00%
Fair value of warrants (in Dollars)						$ 596
Series B Warrants [Member]
Strategic Funding [Line Items]
Warrants issued (in Shares) \| shares				344,828
Exercise price per share (in Dollars per share) \| $ / shares				$ 1.45
Shares vested				172,414
Percentage of shares are fully vested				50.00%
Remaining shares vested (in Shares) \| shares				172,414
Percentage of warrants cancelled						50.00%
Fair value of warrants (in Dollars)						$ 596
Series C Warrants [Member]
Strategic Funding [Line Items]
Warrants issued (in Shares) \| shares		2,222,222
Exercise price per share (in Dollars per share) \| $ / shares		$ 0.675
Shares vested		1,111,111
Percentage of shares are fully vested		50.00%
Remaining shares vested (in Shares) \| shares									1,111,111
Percentage of warrants cancelled						50.00%
Fair value percentage of warrants						50.00%
Percentage of warrants on pro rata basis						50.00%
Series C Warrants [Member] \| Accounting treatment [Member]
Strategic Funding [Line Items]
Percentage of warrants cancelled						50.00%
Series D Warrants [Member]
Strategic Funding [Line Items]
Warrants issued (in Shares) \| shares		370,370
Exercise price per share (in Dollars per share) \| $ / shares		$ 1.35
Shares vested		185,185
Percentage of shares are fully vested		50.00%
Remaining shares vested (in Shares) \| shares									185,185
Percentage of warrants cancelled						50.00%
Fair value percentage of warrants						50.00%
Series D Warrants [Member] \| Accounting treatment [Member]
Strategic Funding [Line Items]
Percentage of warrants cancelled						50.00%