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Convertible Preferred Stock and Stock Warrants (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended
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Feb. 07, 2014 | Mar. 31, 2015 | Mar. 31, 2014
Warrants and Rights Note Disclosure [Abstract] |  |  |
Stock warrants exercised, shares | 1,277,250 ftk_StockIssuedDuringPeriodSharesConversionOfConvertibleWarrantSecurities |  |
Warrants exercised, price per share (in dollars per share) | $ 1.21 ftk_CommonStockIssuedWithWarrantsExerciseExercisePriceperShare |  |
Proceeds from exercise of stock warrants | $ 1,500 us-gaap_ProceedsFromWarrantExercises | $ 0 us-gaap_ProceedsFromWarrantExercises | $ 1,545 us-gaap_ProceedsFromWarrantExercises

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- Definition Common Stock Issued With Warrants Exercise, Exercise Price per Share + References No definition available. + Details
Name: | ftk_CommonStockIssuedWithWarrantsExerciseExercisePriceperShare
Namespace Prefix: | ftk_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of shares issued during the period as a result of the conversion of convertible warrant securities. + References No definition available. + Details
Name: | ftk_StockIssuedDuringPeriodSharesConversionOfConvertibleWarrantSecurities
Namespace Prefix: | ftk_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash inflow associated with the amount received from holders exercising their stock warrants. + References No definition available. + Details
Name: | us-gaap_ProceedsFromWarrantExercises
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_WarrantsAndRightsNoteDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration