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Consolidated Statements of Changes in Equity (Parentheticals) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($)
Consolidated Statements Of Changes In Equity [Abstract] |
At-the-market offering, net of issuance costs | $ 164
Private placement, net of issuance costs | $ 499

X
- Definition The amount of at-the-market offering, net of issuance costs. + References No definition available. + Details
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Namespace Prefix: | alar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition The amount of private placement, net of issuance costs. + References No definition available. + Details
Name: | alar_PrivatePlacementNetOfIssuanceCosts
Namespace Prefix: | alar_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration