XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Investments in Privately Held Companies (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) employee subsidiary company entity | Sep. 30, 2016 USD ($) subsidiary entity | Sep. 30, 2017 USD ($) employee subsidiary company entity item | Sep. 30, 2016 USD ($) subsidiary entity | Dec. 31, 2016 USD ($) entity | Mar. 31, 2017 USD ($)
Summary of investments [Abstract] |  |  |  |  |  |
Direct investments | item |  |  | 6 |  |  |
Indirect investments | item |  |  | 4 |  |  |
Investments in privately-held companies | $ 6,015,000 |  | $ 6,015,000 |  | $ 6,599,000 |
Number of consolidated joint ventures | subsidiary | 1 | 1 | 1 | 1 |  |
Net loss attributable to noncontrolling interests | $ 146,000 | $ (18,000) | $ (226,000) | $ (480,000) |  |
Equity investments classified as other assets | 11,696,000 |  | $ 11,696,000 |  | $ 12,842,000 |
Direct minority investments not consolidated | entity |  |  | 3 |  | 3 |
Minority investments not consolidated accounted for under equity method | entity |  |  | 7 |  |  |
Net income | (1,130,000) | $ (2,321,000) | $ (3,653,000) | $ (5,419,000) |  |
Impairment charge | $ 0 |  | $ 0 |  |  |
Number of gallium companies with impairment charge | entity | 1 |  | 1 |  |  |
Joint Ventures [Member] |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Indirect investments | entity |  |  | 4 |  |  |
Number of consolidated joint ventures | entity | 3 | 3 | 3 | 3 |  |
Income (loss) from consolidated joint ventures | $ 860,000 | $ 399,000 | $ (1,100,000) | $ (82,000) |  |
Net loss attributable to noncontrolling interests | 146,000 | (18,000) | (200,000) | (480,000) |  |
Net income (loss) from joint ventures attributable to parent | 714,000 | 417,000 | 1,300,000 | 398,000 |  |
Other Assets [Member] |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments in privately-held companies | 10,100,000 |  | 10,100,000 |  | $ 11,300,000 |
Other Assets [Member] | Joint Ventures [Member] |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Minority investment in consolidated joint venture, included in other assets | 4,200,000 |  | 4,200,000 |  | 4,700,000 |
Beijing JiYa Semiconductor Material Co., Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments, consolidated | $ 3,331,000 |  | $ 3,331,000 |  | 3,331,000 |
Percentage of ownership, consolidated method (in hundredths) |  |  | 46.00% |  |  |
Number of persons on board | employee | 1 |  | 1 |  |  |
Employee duration |  |  | 27 years |  |  |
Nanjing JinMei Gallium Co., Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments, consolidated | $ 592,000 |  | $ 592,000 |  | 592,000 |
Percentage of ownership, consolidated method (in hundredths) |  |  | 83.00% |  |  |
Number of new board representatives | employee |  |  | 2 |  |  |
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments, consolidated | 1,346,000 |  | $ 1,346,000 |  | 1,346,000 |
Percentage of ownership, consolidated method (in hundredths) |  |  | 70.00% |  |  |
Number of new board representatives | employee |  |  | 2 |  |  |
Donghai County Dongfang High Purity Electronic Materials Co., Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments in privately-held companies | $ 1,445,000 |  | $ 1,445,000 |  | 1,498,000 |
Percentage of ownership, equity method (in hundredths) | 46.00% |  | 46.00% |  |  |
Xilingol Tongli Germanium Co. Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments in privately-held companies | $ 3,522,000 |  | $ 3,522,000 |  | 4,000,000 |
Percentage of ownership, equity method (in hundredths) | 25.00% |  | 25.00% |  |  |
Emeishan Jia Mei High Purity Metals Co., Ltd Investment |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments in privately-held companies | $ 1,048,000 |  | $ 1,048,000 |  | 1,101,000 |
Percentage of ownership, equity method (in hundredths) | 25.00% |  | 25.00% |  |  |
Seven Minority Investments |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Minority investments not consolidated accounted for under equity method | entity | 7 |  | 7 |  |  |
Net income | $ (266,000) | $ (581,000) | $ (1,400,000) | $ (1,400,000) |  |
One Gallium Company |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments in privately-held companies | 0 |  | 0 |  |  | $ 0
Impairment charge | $ 0 |  | $ 313,000 |  |  |
Number of gallium companies with impairment charge | company | 1 |  | 1 |  |  |
Beijing JiYa Semiconductor Material Co., Ltd |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Indirect investments | entity |  |  | 3 |  |  |
Nanjing JinMei Gallium Co., Ltd |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Indirect investments | entity |  |  | 1 |  |  |
Majority-Owned Subsidiaries [Member] |  |  |  |  |  |
Summary of investments [Abstract] |  |  |  |  |  |
Investments, consolidated | $ 5,269,000 |  | $ 5,269,000 |  | $ 5,269,000 |

X
- Definition Represents direct investments by the entity. Recorded by equity and consolidated methods. + References No definition available. + Details
Name: | axti_DirectInvestmentsEquityAndConsolidated
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the duration an employee has worked for the entity. + References No definition available. + Details
Name: | axti_EmployeeDuration
Namespace Prefix: | axti_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of net income (loss) generated by joint ventures in which entity has investment. + References No definition available. + Details
Name: | axti_IncomeLossFromConsolidatedJointVentures
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total investments in (A) entities in which the entity has significant influence and control, (B) joint ventures that are consolidated, but (C) entities in which local management manage daily operations, (D) entities that not required additional investment of financial support from the parent entity. + References No definition available. + Details
Name: | axti_InvestmentsInJointVenturesConsolidated
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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 Represents information pertaining to minority investments in privately held companies through consolidated joint ventures. + References No definition available. + Details
Name: | axti_MinorityInvestmentsInPrivatelyHeldCompanies
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents amount of net income (loss) generated by consolidated joint ventures attributable to parent after allocating the share of minority interest. + References No definition available. + Details
Name: | axti_NetIncomeLossFromJointVenturesAttributableToParent
Namespace Prefix: | axti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the number of gallium companies with an impairment charge. + References No definition available. + Details
Name: | axti_NumberGalliumCompaniesWithImpairmentCharge
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents number of joint ventures in which entity has interest and therefore has consolidated the figures as the date of reporting. + References No definition available. + Details
Name: | axti_NumberOfConsolidatedJointVentures
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of direct minority investment entities that are not consolidated. + References No definition available. + Details
Name: | axti_NumberOfDirectMinorityInvestmentEntities
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of new board representatives + References No definition available. + Details
Name: | axti_NumberOfNewBoardRepresentatives
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of individuals on the board + References No definition available. + Details
Name: | axti_NumberOfPersonsOnBoard
Namespace Prefix: | axti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of net income (loss) reported by an equity method investment of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721683-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33912-111571 + Details
Name: | us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of the equity interests owned by noncontrolling shareholders, partners, or other equity holders in joint ventures included in the entity's consolidated financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568740-111683 + Details
Name: | us-gaap_MinorityInterestInJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591551-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=64809438&loc=SL4573702-111684 + Details
Name: | us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of noncurrent assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=64801991&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_BeijingJiyaSemiconductorMaterialCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_DonghaiCountyDongfangHighPurityElectronicMaterialsCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_XilingolTongliGermaniumCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_EmeishanJiaMeiHighPurityMetalsCo.LtdInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_SevenMinorityInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=axti_OneGalliumEquityInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=axti_BeijingJiyaSemiconductorMaterialCoLtdMember
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: | dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |