XML 80 R46.htm IDEA: XBRL DOCUMENT
v3.22.4

The Company and Summary of Significant Accounting Policies - Principles of Consolidation (Details) |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 25, 2021 USD ($) | Aug. 31, 2022 USD ($) | Jul. 31, 2022 USD ($) | May 31, 2022 USD ($) | Apr. 30, 2022 USD ($) | Jan. 31, 2022 USD ($) | Jun. 30, 2021 USD ($) | May 31, 2021 USD ($) | Feb. 28, 2021 USD ($) | Jan. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) company | Dec. 31, 2021 USD ($) company | Dec. 31, 2020 USD ($) | Sep. 30, 2022 | Oct. 31, 2021 USD ($) | Sep. 30, 2021 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equity method investments | company |  |  |  |  |  |  |  |  |  |  | 6 | 5 |  |  |  |
Investments, equity method |  |  |  |  |  |  |  |  |  |  | $ 14,607,000 | $ 10,166,000 |  |  |  |
Transaction results in increase to redeemable noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 1,241,000 |  |  |  |
Sale of subsidiary shares to noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 1,151,000 | $ 396,000 |  |  |
Increase in redeemable noncontrolling interests |  |  |  |  |  |  |  |  |  |  |  | 1,514,000 |  |  |  |
Foreign Currency Translation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange gain (loss) |  |  |  |  |  |  |  |  |  |  | 1,573,000 | (434,000) | $ (411,000) |  |  |
AXT-Tongmei, Inc | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash consideration |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | Loan from related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in redeemable noncontrolling interests |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | Loan from related party | ChaoYang Xinshuo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000.0 | $ 900,000
Sale of subsidiary shares to noncontrolling interests |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  |  |  |  |  |
Amount paid to subsidiary |  |  |  | 600,000 | 700,000 |  |  |  |  |  |  |  |  |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | Loan from related party | Beijing Tongmei Xtal Technology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of subsidiary shares to noncontrolling interests |  |  |  |  | 2,600,000 |  |  |  |  |  |  |  |  |  |  |
Amount paid to subsidiary |  |  |  | 800,000 | 1,100,000 |  |  |  |  |  |  |  |  |  |  |
Increase in noncontrolling interest |  |  |  | $ 1,400,000 |  | $ 2,200,000 |  |  |  |  |  |  |  |  |  |
Increase in redeemable noncontrolling interests |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment value, agreement amount |  |  |  |  |  |  |  | $ 1,800,000 | $ 3,000,000.0 |  |  |  |  |  |  |
Investments, equity method |  |  |  |  |  |  |  |  | $ 1,800,000 |  |  |  |  |  |  |
Ownership (as a percent) |  |  | 58.50% | 58.50% |  | 58.50% |  | 58.50% | 58.50% |  |  |  |  |  |  |
Initial funding |  |  |  |  |  |  |  | $ 1,500,000 | $ 1,500,000 |  |  |  |  |  |  |
Increase in noncontrolling interest |  |  | $ 610,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Further investment |  |  | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest increased |  |  | 57,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | Loan from related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of subsidiary shares to noncontrolling interests |  |  |  |  | 4,500,000 |  |  |  |  |  |  |  |  |  |  |
ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment value, agreement amount |  |  |  |  | 4,400,000 |  |  |  |  |  |  |  |  |  |  |
Investments, equity method |  |  |  |  | $ 3,300,000 |  |  |  |  |  |  |  |  |  |  |
Ownership (as a percent) |  |  |  |  | 75.00% |  |  |  |  |  |  |  |  |  |  |
Initial funding |  | $ 334,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in noncontrolling interest |  | 406,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest increased |  | 73,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
ChaoYang KaiMei Quartz Co., Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment value, agreement amount |  |  |  |  | $ 7,600,000 |  |  |  |  |  |  |  |  |  |  |
Investments, equity method |  |  |  |  | $ 3,000,000.0 |  |  |  |  |  | $ 827,000 |  |  |  |  |
Ownership (as a percent) |  |  |  |  | 40.00% |  |  |  |  |  | 40.00% |  |  |  |  |
Initial funding |  |  | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Investment amount |  |  | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares |  |  |  |  |  |  |  |  |  |  |  |  | 33.00% |  |  |
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment | Beijing Boyu Semiconductor Vessel Craftwork Technology Co Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private equity ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 7.59% |  |  |
Beijing Tongmei Xtal Technology |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares | 7.28% |  |  |  |  |  |  |  |  |  |  |  |  | 14.50% |  |
Private equity ownership percentage | 7.28% |  |  |  |  |  |  |  |  |  | 14.50% |  |  |  |  |
Percentage of key managers and contributors purchased |  |  |  |  |  |  |  |  |  |  |  |  | 0.40% |  |  |
Investment in new facility | $ 49,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 48,100,000 |  |  |
Raised additional capital |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |
Transaction results in increase to noncontrolling interests |  |  |  |  |  |  | 1,200,000 |  |  |  |  |  |  |  |  |
Transaction results in increase to redeemable noncontrolling interests |  |  |  |  |  |  | $ 1,200,000 |  |  |  |  |  |  |  |  |
Increase in redeemable noncontrolling interests |  |  |  |  |  |  |  |  |  | $ 1,500,000 |  |  | $ 48,100,000 |  |  |
Beijing Tongmei Xtal Technology | Beijing Boyu Semiconductor Vessel Craftwork Technology Co Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment amount |  |  |  |  |  |  |  |  | $ 900,000 |  |  |  |  |  |  |
Private equity ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 7.59% |  |  |
Beijing Tongmei Xtal Technology | Nanjing JinMei Gallium Co., Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private equity ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 0.0038% |  |  |
Beijing Tongmei Xtal Technology | Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount |  |  |  |  |  | $ 1,400,000 |  |  |  |  |  | $ 1,400,000 |  |  |  |
Beijing Tongmei Xtal Technology | Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | Loan from related party |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in noncontrolling interest |  |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Beijing Tongmei Xtal Technology | Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial funding |  |  | 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Investment amount |  |  |  |  |  |  |  | $ 900,000 |  |  |  |  |  |  |  |
Further investment |  |  | $ 800,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Nanjing JinMei Gallium Co., Ltd Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares |  |  |  |  |  |  |  |  |  |  |  |  | 8.50% |  |  |
Nanjing JinMei Gallium Co., Ltd Investment | Nanjing JinMei Gallium Co., Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private equity ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  | 0.38% |  |  |
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. | ChaoYang ShuoMei High Purity Semiconductor Materials Co., Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial funding |  | $ 1,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition The amount of increase in noncontrolling interests due to transfer of subsidiary with noncontrolling interests. + References No definition available. + Details
Name: | axti_IncreaseInNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of increase in redeemable noncontrolling interests due to transfer of subsidiary with noncontrolling interests. + References No definition available. + Details
Name: | axti_IncreaseInRedeemableNoncontrollingInterestsDueToTransferOfSubsidiaryWithNoncontrollingInterests
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of joint venture investment funds collected. + References No definition available. + Details
Name: | axti_JointVentureAgreementInitialInvestmentFundsCollected
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of further investment held under joint venture agreement. + References No definition available. + Details
Name: | axti_JointVentureAgreementsFurtherInvestment
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the number of minority investment entities that are not consolidated and are accounted for under the equity method. + References No definition available. + Details
Name: | axti_MinorityInvestmentEntitiesNotConsolidatedAccountedForByEquityMethod
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of equity issued on conversion of noncontrolling interests. + References No definition available. + Details
Name: | axti_PercentageOfEquityIssuedOnConversionOfNonControllingInterests
Namespace Prefix: | axti_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of equity purchased by employees, key managers and Contributors. + References No definition available. + Details
Name: | axti_PercentageOfEquityPurchasedByEmployeesKeyManagersAndContributors
Namespace Prefix: | axti_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total investment value of a joint venture agreement. + References No definition available. + Details
Name: | axti_TotalInvestmentOfJointVentureAgreement
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents a sale (new stock issuance) by a subsidiary to noncontrolling interests (third parties, parties directly or indirectly unrelated to parent) during the period. The capital transaction by subsidiary does not result in a loss of control by the parent, but does effect a change in total (consolidated) equity attributable to the parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 + Details
Name: | us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIssuanceOfEquityBySubsidiaryToNoncontrollingInterests
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestEffectsOfChangesNetLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=125521441&loc=d3e30690-110894 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123602790&loc=d3e30226-110892 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=120253306&loc=d3e28228-110885 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124440516&loc=d3e30840-110895 + Details
Name: | us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cost of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 + Details
Name: | us-gaap_InvestmentOwnedAtCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4568740-111683 + Details
Name: | us-gaap_MinorityInterestPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4569655-111683 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from advancing money to an affiliate (an entity that is related but not strictly controlled by the entity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsForAdvanceToAffiliate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireInterestInJointVenture
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Change in the value of each type or class of stock classified as temporary equity during the period. The redemption requirement does not constitute an unconditional obligation that will be settled in a variable number of shares constituting a monetary value predominantly indexed to (a) a fixed monetary amount known at inception, (b) an amount inversely correlated with the residual value of the entity, or (c) an amount determined by reference to something other than the fair value of issuer's stock. Does not include mandatorily redeemable stock. The exception is if redemption is required upon liquidation or termination of the reporting entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (27) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=122040564&loc=d3e177068-122764 + Details
Name: | us-gaap_TemporaryEquityIssuePeriodIncreaseOrDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of new stock classified as temporary equity issued during the period. + References No definition available. + Details
Name: | us-gaap_TemporaryEquityStockIssuedDuringPeriodValueNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=axti_AxtTongmeiInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=axti_ChaoyangXinmeiHighPuritySemiconductorMaterialsCo.LtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=axti_LoanFromRelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=axti_MinorityInvestorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=axti_BeijingTongmeiXtalTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_ChaoyangXinmeiHighPuritySemiconductorMaterialsCo.LtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_ChaoYangShuoMeiHighPuritySemiconductorMaterialsCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_ChaoyangKaimeiQuartzCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=axti_BeijingBoyuSemiconductorVesselCraftworkTechnologyCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=axti_BeijingBoyuSemiconductorVesselCraftworkTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=axti_BeijingTongmeiXtalTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=axti_NanjingJinMeiGalliumCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=axti_NanjingJinMeiGalliumCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=axti_ChaoyangXinmeiHighPuritySemiconductorMaterialsCo.LtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |