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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash flows from operating activities:      
Net Income (loss) $ (697)us-gaap_ProfitLoss $ (6,813)us-gaap_ProfitLoss $ 6,150us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash provided by operations:      
Depreciation and amortization 5,639us-gaap_DepreciationDepletionAndAmortization 5,470us-gaap_DepreciationDepletionAndAmortization 3,927us-gaap_DepreciationDepletionAndAmortization
Amortization of marketable securities premium 432us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments 518us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments 323us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Stock-based compensation 1,129us-gaap_ShareBasedCompensation 1,277us-gaap_ShareBasedCompensation 1,215us-gaap_ShareBasedCompensation
Provision for doubtful accounts 9us-gaap_ProvisionForDoubtfulAccounts 869us-gaap_ProvisionForDoubtfulAccounts 0us-gaap_ProvisionForDoubtfulAccounts
Realized gain on sale of investments (1,263)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses 0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses 0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Gain on sale of cost method investment 0us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments (811)us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments 0us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments
Loss (gain) on disposal of property, plant and equipment (13)us-gaap_GainLossOnSaleOfPropertyPlantEquipment (9)us-gaap_GainLossOnSaleOfPropertyPlantEquipment 195us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Changes in assets and liabilities:      
Accounts receivable, net (2,959)us-gaap_IncreaseDecreaseInAccountsReceivable 2,160us-gaap_IncreaseDecreaseInAccountsReceivable 54us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories 479us-gaap_IncreaseDecreaseInInventories 1,439us-gaap_IncreaseDecreaseInInventories 5,659us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets 2,393us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (645)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets 1,784us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Other assets (255)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets (1,859)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets (174)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Accounts payable (979)us-gaap_IncreaseDecreaseInAccountsPayable 2,185us-gaap_IncreaseDecreaseInAccountsPayable 2,608us-gaap_IncreaseDecreaseInAccountsPayable
Accrued liabilities 742us-gaap_IncreaseDecreaseInAccruedLiabilities (899)us-gaap_IncreaseDecreaseInAccruedLiabilities 461us-gaap_IncreaseDecreaseInAccruedLiabilities
Other long-term liabilities (833)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities (373)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities (900)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Net cash provided by operating activities 3,824us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations 2,509us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations 21,302us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities:      
Purchases of property, plant and equipment (1,971)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (5,424)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (7,079)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from disposal of property, plant and equipment 13us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 0us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 2us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Purchases of available for sale securities (11,828)us-gaap_PaymentsToAcquireAvailableForSaleSecurities (14,092)us-gaap_PaymentsToAcquireAvailableForSaleSecurities (12,116)us-gaap_PaymentsToAcquireAvailableForSaleSecurities
Proceeds from sales and maturities of available for sale securities 13,928us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities 12,486us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities 6,900us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Repayment from (Loans to) related parties 0us-gaap_PaymentsToFundLongtermLoansToRelatedParties 818us-gaap_PaymentsToFundLongtermLoansToRelatedParties (875)us-gaap_PaymentsToFundLongtermLoansToRelatedParties
Net cash provided by (used in) investing activities 142us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (6,212)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations (13,168)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities:      
Proceeds from common stock options exercised 134us-gaap_ProceedsFromStockOptionsExercised 532us-gaap_ProceedsFromStockOptionsExercised 294us-gaap_ProceedsFromStockOptionsExercised
Repurchases of the Company's common stock, including commission 0us-gaap_PaymentsForRepurchaseOfCommonStock (716)us-gaap_PaymentsForRepurchaseOfCommonStock 0us-gaap_PaymentsForRepurchaseOfCommonStock
Dividends paid by joint ventures (166)axti_PaymentsOfDividendsByJointVentures (2,329)axti_PaymentsOfDividendsByJointVentures (4,086)axti_PaymentsOfDividendsByJointVentures
Net cash used in financing activities (32)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations (2,513)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations (3,792)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of exchange rate changes on cash and cash equivalents (81)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents 543us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents 136us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net increase (decrease) in cash and cash equivalents 3,853us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (5,673)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 4,478us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at the beginning of the year 24,961us-gaap_CashAndCashEquivalentsAtCarryingValue 30,634us-gaap_CashAndCashEquivalentsAtCarryingValue 26,156us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at the end of the year 28,814us-gaap_CashAndCashEquivalentsAtCarryingValue 24,961us-gaap_CashAndCashEquivalentsAtCarryingValue 30,634us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental disclosures:      
Income taxes paid $ 293us-gaap_IncomeTaxesPaid $ 782us-gaap_IncomeTaxesPaid $ 1,729us-gaap_IncomeTaxesPaid