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Contract Assets and Contract Liabilities - Additional Information (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 USD ($)
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] |
Revenue recognized from contract liabilities | $ 3.1

X
- Definition Contract with customer liability revenue recognized including opening balance. + References No definition available. + Details
Name: | atec_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance
Namespace Prefix: | atec_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration