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v3.25.3

Leases - Narrative (Details) | 1 Months Ended |  |
--- | --- | --- | ---
Aug. 31, 2024 renewal_option | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
Leases [Abstract] |  |  |
Number of renewal options | renewal_option | 2 |  |
Lease renewal term | 5 years |  |
Finance leases |  | $ 0 | $ 0
Subleases |  | $ 0 | $ 0

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- Definition Lessee, Operating Lease, Number Of Renewal Options + References No definition available. + Details
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Balance Type: | na
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- Definition Sublease Liability + References No definition available. + Details
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Namespace Prefix: | alrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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Balance Type: | credit
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- References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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