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Segment Information and Foreign Operations (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 Segment | Mar. 31, 2014 | Dec. 31, 2014 Customer
Segment Information [Abstract] |  |  |
Number of operating segments | 1 us-gaap_NumberOfOperatingSegments |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | $ 20,064 us-gaap_Revenues | $ 19,345 us-gaap_Revenues |
Long-lived assets by geographic region [Abstract] |  |  |
Long-lived assets | 33,223 us-gaap_PropertyPlantAndEquipmentNet |  | 33,862 us-gaap_PropertyPlantAndEquipmentNet
Revenue [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of customers representing significant share | 0 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember | 0 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember |
Accounts Receivable [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of customers representing significant share | 0 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember |  | 2 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember
Major Customer One [Member] | Accounts Receivable [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Percentage share generated by major customers (in hundredths) |  |  | 11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_MajorCustomersAxis = axti_MajorCustomerOneMember
Major Customer Two [Member] | Accounts Receivable [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Percentage share generated by major customers (in hundredths) |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_MajorCustomersAxis = axti_MajorCustomerTwoMember
Top Five Major Customers [Member] | Revenue [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Number of customers representing significant share | 5 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_MajorCustomersAxis = axti_TopFiveMajorCustomersMember | 5 axti_NumberOfCustomersRepresentingSignificantShare / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_MajorCustomersAxis = axti_TopFiveMajorCustomersMember |
Percentage share generated by major customers (in hundredths) | 35.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_MajorCustomersAxis = axti_TopFiveMajorCustomersMember | 39.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesMember / us-gaap_MajorCustomersAxis = axti_TopFiveMajorCustomersMember |
Europe (primarily Germany) [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 4,943 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember | 6,583 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_EuropeMember |
China [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 3,297 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_CN | 4,165 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_CN |
Long-lived assets by geographic region [Abstract] |  |  |
Long-lived assets | 32,820 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_CN |  | 33,726 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_CN
Asia Pacific (excluding China, Japan and Taiwan) [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 2,759 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = axti_AsiaPacificExcludingJapanAndTaiwanMember | 2,389 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = axti_AsiaPacificExcludingJapanAndTaiwanMember |
Taiwan [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 3,109 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_TW | 2,115 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_TW |
Japan [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 2,484 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_JP | 2,313 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = country_JP |
North America (primarily the United States) [Member] | Reportable Geographical Components [Member] |  |  |
Net revenues reported for products shipped to customers in corresponding geographic region [Abstract] |  |  |
Revenue | 3,472 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 1,780 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |
Long-lived assets by geographic region [Abstract] |  |  |
Long-lived assets | $ 403 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  | 136 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember

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