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Revenue (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Revenue |
Schedule of amounts recorded in accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, | ​
​ | ​ | 2021 | ​ | 2020 | ​
Contract liabilities | ​ | $ | (345) | ​ | $ | (374) | ​
During the three and nine months ended September 30, 2021, the Company recognized $0 and $260,000 of revenue that was included in the contract balances as of December 31, 2020. | ​ | ​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of contract liabilities with customers + References No definition available. + Details
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Namespace Prefix: | axti_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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