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v3.21.2

Supplemental Cash Flow Information - Narratives (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2021 | Jun. 30, 2021
Supplemental Cash Flow Elements [Abstract] |  |
Employee retention credit |  | $ 1.9
Employee retention expense | $ 0.9 | 0.8
Employee retention credit available | $ 1.9 | $ 1.1

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- Definition Employee Retention Charge, CARES Act + References No definition available. + Details
Name: | ftk_EmployeeRetentionChargeCARESAct
Namespace Prefix: | ftk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Prepaid Retention Credit, CARES Act + References No definition available. + Details
Name: | ftk_PrepaidRetentionCreditCARESAct
Namespace Prefix: | ftk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Unusual Or Infrequent Item Employee Retention Credit CARES Act + References No definition available. + Details
Name: | ftk_UnusualOrInfrequentItemEmployeeRetentionCreditCARESAct
Namespace Prefix: | ftk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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