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Consolidated Statements of Stockholders’ Equity (USD $) In Thousands, except Share data | Total | Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Nil Coupon Perpetual Loan Notes | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ 89,013 us-gaap_StockholdersEquity | $ 237 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 132,350 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (44,031)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember | $ 381 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 76 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_NilCouponPerpetualLoanNotesMember | $ 0 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance (in Shares) at Dec. 31, 2011 |  | 23,644,000 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Net (loss) income | 2,776 us-gaap_NetIncomeLoss |  |  | 2,776 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember |  |  |
Foreign currency translation adjustments | (765)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |  |  | (765)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Unrealized gains/(losses) from marketable securities, net of tax | (8)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax |  |  |  | (8)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Stock compensation expense | 1,248 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 1,248 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Issuance of deferred shares of stock | 58 us-gaap_StockIssuedDuringPeriodValueOther |  | 58 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Tax effect of expired vested options | (57)ftek_TaxBenefitFromStockOptionsExpired |  | (57)ftek_TaxBenefitFromStockOptionsExpired / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Repurchases and retirement of common shares (in Shares) |  | (1,605,000)us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Repurchases and retirement of common shares | (7,889)us-gaap_StockRepurchasedDuringPeriodValue | (16)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  | (7,873)us-gaap_StockRepurchasedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember |  |  |
Common shares issued upon vesting of restricted stock units | (101)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross |  | (101)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Common shares issued upon vesting of restricted stock units |  | 72,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld (in shares) |  | (9,000)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld | (39)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (39)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at Dec. 31, 2012 | 84,236 us-gaap_StockholdersEquity | 221 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 133,498 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (49,128)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember | (392)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 76 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_NilCouponPerpetualLoanNotesMember | (39)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance (in Shares) at Dec. 31, 2012 |  | 22,102,000 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Net (loss) income | 5,101 us-gaap_NetIncomeLoss |  |  | 5,101 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember |  |  |
Foreign currency translation adjustments | 438 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |  |  | 438 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Unrealized gains/(losses) from marketable securities, net of tax | (9)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax |  |  |  | (9)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Exercise of stock options (in shares) |  | 195,000 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Exercise of stock options | 811 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised | 2 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 809 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Stock compensation expense | 67 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 67 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Issuance of deferred shares of stock | 1,798 us-gaap_StockIssuedDuringPeriodValueOther |  | 1,798 us-gaap_StockIssuedDuringPeriodValueOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Tax effect of expired vested options | (121)ftek_TaxBenefitFromStockOptionsExpired |  | (121)ftek_TaxBenefitFromStockOptionsExpired / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Common shares issued upon vesting of restricted stock units | (3,251)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross | 4 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (3,255)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Common shares issued upon vesting of restricted stock units |  | 395,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld (in shares) | (99,531)us-gaap_TreasuryStockSharesAcquired | (99,000)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld | (447)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (447)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at Dec. 31, 2013 | 88,623 us-gaap_StockholdersEquity | 227 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 132,796 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | (44,027)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember | 37 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | 76 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_NilCouponPerpetualLoanNotesMember | (486)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance (in Shares) at Dec. 31, 2013 |  | 22,593,000 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Net (loss) income | (17,725)us-gaap_NetIncomeLoss |  |  | (17,725)us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember |  |  |
Foreign currency translation adjustments | (489)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |  |  | (489)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Unrealized gains/(losses) from marketable securities, net of tax | 4 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax |  |  |  | 4 us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |  |
Exercise of stock options | 297 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 297 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Tax benefit from stock compensation expense | 7 us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet |  | 7 us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Stock compensation expense | 2,322 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  | 2,322 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Issuance of deferred shares of stock (in shares) |  | 60,000 us-gaap_StockIssuedDuringPeriodSharesOther / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Tax effect of expired vested options | (379)ftek_TaxBenefitFromStockOptionsExpired |  | (379)ftek_TaxBenefitFromStockOptionsExpired / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Repurchases and retirement of common shares (in Shares) | (2,306,590)us-gaap_StockRepurchasedDuringPeriodShares |  |  |  |  |  |
Common shares issued upon vesting of restricted stock units | (55)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross | 3 us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | (58)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |  |
Common shares issued upon vesting of restricted stock units |  | 266,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld (in shares) | (58,649)us-gaap_TreasuryStockSharesAcquired | (59,000)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |
Treasury shares withheld | (304)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (304)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at Dec. 31, 2014 | $ 72,301 us-gaap_StockholdersEquity | $ 230 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 134,985 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ (61,752)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_AccumulatedDeficitMember | $ (448)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ 76 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = ftek_NilCouponPerpetualLoanNotesMember | $ (790)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance (in Shares) at Dec. 31, 2014 |  | 22,860,000 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |  |

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