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v3.25.1

Organization and Significant Accounting Policies - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2025
Maximum |
Significant Accounting Policies [Line Items] |
Percentage of revenue from other distinct performance obligations of total revenue | 10.00%

X
- Definition Percentage of revenue from other distinct performance obligations of revenue. + References No definition available. + Details
Name: | atec_PercentageOfRevenueFromOtherDistinctPerformanceObligationsOfRevenue
Namespace Prefix: | atec_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant accounting policies. + References No definition available. + Details
Name: | atec_SignificantAccountingPoliciesLineItems
Namespace Prefix: | atec_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |