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Cash, Cash Equivalents and Investments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash, cash equivalents and investments [Abstract]
Cash	$ 28,791,000us-gaap_Cash	$ 24,852,000us-gaap_Cash
Cash Equivalents, at Carrying Value [Abstract]
Money market fund	23,000us-gaap_MoneyMarketFundsAtCarryingValue	109,000us-gaap_MoneyMarketFundsAtCarryingValue
Cash and cash equivalents, at carrying value, total	28,814,000us-gaap_CashAndCashEquivalentsAtCarryingValue	24,961,000us-gaap_CashAndCashEquivalentsAtCarryingValue	30,634,000us-gaap_CashAndCashEquivalentsAtCarryingValue	26,156,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, fair value disclosure	28,814,000us-gaap_CashAndCashEquivalentsFairValueDisclosure	24,961,000us-gaap_CashAndCashEquivalentsFairValueDisclosure
Amortized Cost	48,267,000us-gaap_AvailableForSaleSecuritiesAmortizedCost	45,682,000us-gaap_AvailableForSaleSecuritiesAmortizedCost
Gross Unrealized Gain	712,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1,933,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Gross Unrealized (Loss)	(42,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	(10,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Fair Value	48,937,000us-gaap_AvailableForSaleSecurities	47,605,000us-gaap_AvailableForSaleSecurities
Contractual maturities on investments, amortized cost basis [Abstract]
Due within 1 year	11,631,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	10,569,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
Due after 1 through 5 years	7,822,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	10,152,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
Investments, amortized cost	19,453,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	20,721,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost
Contractual maturities on investments, fair value basis [Abstract]
Due within 1 year	12,340,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	12,499,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
Due after 1 through 5 years	7,783,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10,145,000us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
Investments, fair value	20,123,000us-gaap_AvailableForSaleSecuritiesDebtSecurities	22,644,000us-gaap_AvailableForSaleSecuritiesDebtSecurities
Proceeds from sales of available-for-sale investments	1,300,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Gross realized losses on available-for-sale securities	(1,263,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses	0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses	0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Gross realized gains on available-for-sale securities	1,300,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains	0us-gaap_AvailableForSaleSecuritiesGrossRealizedGains	0us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Unrealized gain, net of tax	710,000us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	1,600,000us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax
Gain on sale of available for sale security	1,300,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	800,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity
Summary of fair value and gross unrealized losses related to available-for-sale securities [Abstract]
Fair value, in loss position less than twelve months	8,262,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	7,898,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Gross unrealized loss, in loss position less than twelve months	(40,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	(9,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses
Fair value, in loss position greater than twelve months	4,309,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	4,431,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Gross unrealized loss, in loss position greater than twelve months	(2,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	(1,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses
Fair value, total in loss position	12,571,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	12,329,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Gross unrealized loss, total in loss position	(42,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses	(10,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses
Investment in privately held Companies [Abstract]
Minority investments in unconsolidated privately-held companies	200,000us-gaap_CostMethodInvestments	200,000us-gaap_CostMethodInvestments
Other assets [Member]
Investment in privately held Companies [Abstract]
Investments in privately-held companies	12,100,000us-gaap_EquityMethodInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember	10,900,000us-gaap_EquityMethodInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember
Minority investments in unconsolidated privately-held companies	200,000us-gaap_CostMethodInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember	200,000us-gaap_CostMethodInvestments / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherAssetsMember
Certificates of deposit [Member]
Cash Equivalents, at Carrying Value [Abstract]
Amortized Cost	10,195,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	6,320,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Gross Unrealized Gain	1,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	2,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Gross Unrealized (Loss)	(13,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	(4,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Fair Value	10,183,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	6,318,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Summary of fair value and gross unrealized losses related to available-for-sale securities [Abstract]
Fair value, in loss position less than twelve months	4,492,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	3,425,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Gross unrealized loss, in loss position less than twelve months	(13,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	(4,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Fair value, in loss position greater than twelve months	0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	720,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Gross unrealized loss, in loss position greater than twelve months	0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	0us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Fair value, total in loss position	4,492,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	4,145,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Gross unrealized loss, total in loss position	(13,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember	(4,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CertificatesOfDepositMember
Corporate bonds [Member]
Cash Equivalents, at Carrying Value [Abstract]
Amortized Cost	9,214,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	14,276,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Gross Unrealized Gain	1,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	8,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Gross Unrealized (Loss)	(29,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	(6,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Fair Value	9,186,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	14,278,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Summary of fair value and gross unrealized losses related to available-for-sale securities [Abstract]
Fair value, in loss position less than twelve months	3,770,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	4,473,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Gross unrealized loss, in loss position less than twelve months	(27,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	(5,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Fair value, in loss position greater than twelve months	4,309,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	3,711,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Gross unrealized loss, in loss position greater than twelve months	(2,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	(1,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Fair value, total in loss position	8,079,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	8,184,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Gross unrealized loss, total in loss position	(29,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember	(6,000)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses / us-gaap_FairValueByAssetClassAxis = us-gaap_CorporateBondSecuritiesMember
Corporate equity security [Member]
Cash Equivalents, at Carrying Value [Abstract]
Amortized Cost	44,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember	125,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember
Gross Unrealized Gain	710,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember	1,923,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember
Gross Unrealized (Loss)	0axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember	0axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember
Fair Value	754,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember	2,048,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_EquitySecuritiesMember
Total Investments [Member]
Cash Equivalents, at Carrying Value [Abstract]
Amortized Cost	19,453,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember	20,721,000us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember
Gross Unrealized Gain	712,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember	1,933,000axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember
Gross Unrealized (Loss)	(42,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember	(10,000)axti_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember
Fair Value	20,123,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember	22,644,000us-gaap_AvailableForSaleSecurities / us-gaap_FairValueByAssetClassAxis = us-gaap_InvestmentsMember
Recurring [Member] | Money market fund [Member]
Cash Equivalents, at Carrying Value [Abstract]
Money market fund	$ 23,000us-gaap_MoneyMarketFundsAtCarryingValue / us-gaap_FairValueByAssetClassAxis = us-gaap_MoneyMarketFundsMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember	$ 109,000us-gaap_MoneyMarketFundsAtCarryingValue / us-gaap_FairValueByAssetClassAxis = us-gaap_MoneyMarketFundsMember / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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