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Inventories - Schedule of Inventory Reserve (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Inventory reserves |  |
Balance, beginning of year | $ 5,698 | $ 2,117
Charged to provisions | 12,261 | 5,659
Deductions for sales and disposals | (6,901) | (2,078)
Balance, end of the year | $ 11,058 | $ 5,698

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- Definition Inventory Valuation Reserves, Charged To Provisions + References No definition available. + Details
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- Definition Inventory Valuation Reserves, Deductions For Sales and Disposals + References No definition available. + Details
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- Definition Inventory Valuation Reserves [Roll Forward] + References No definition available. + Details
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Namespace Prefix: | ftk_
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Balance Type: | na
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- Definition Amount of valuation reserve for inventory. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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