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Income Taxes - Additional Disclosures (Details) - filing_group | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Dec. 31, 2015
Income Tax Disclosure [Abstract] |  |
Number of U.S. tax return filing groups | 1 | 2

X
- Definition Number of federal income tax return filing groups. + References No definition available. + Details
Name: | ftk_NumberOfFederalIncomeTaxReturnFilingGroups
Namespace Prefix: | ftk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration