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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2021
Common stock, offering costs | $ 12,136 |
Private Placement |  |
Common stock, offering costs |  | $ 6,200

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- Definition Common stock offering costs. + References No definition available. + Details
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Namespace Prefix: | atec_
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Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |