Own share lending arrangement shares returned.

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Treasury stock shares surrendered in exercise of stock options.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Number of shares of common and preferred stock retired from treasury during the period.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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-Publisher SEC

-Name Regulation S-X (SX)

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Common Stock (Share-Based Compensation, Treasury Stock, and Stock Repurchase Plan) (Details) (USD $)	0 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2014	Jan. 22, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash share-based compensation expense				$ 10,500,000	$ 10,900,000	$ 13,400,000
Common stock shares purchased by the company			621,176us-gaap_TreasuryStockSharesAcquired	243,005us-gaap_TreasuryStockSharesAcquired	448,121us-gaap_TreasuryStockSharesAcquired
Common stock shares purchased, cost			10,400,000	6,294,000	7,568,000	2,034,000
Common stock shares purchased, average cost per share (in dollars per share)			$ 16.74
Stock surrendered for exercise of stock options, shares				46,208ftk_StockSurrenderedDuringPeriodShares	237,267ftk_StockSurrenderedDuringPeriodShares
Return of borrowed shares under share-based, shares		2,439,558			2,439,558	1,360,442
Treasury stock shares retired	5,873,291us-gaap_TreasuryStockSharesRetired			5,873,291us-gaap_TreasuryStockSharesRetired	0us-gaap_TreasuryStockSharesRetired
Treasury stock shares retired, cost	32,600,000
Stock repurchase shares authorized							25,000,000
Remaining authorized repurchase amount	14,600,000		14,600,000	14,600,000
Treasury Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares purchased by the company				243,000	448,000	166,000
Common stock shares purchased, cost				6,294,000	7,568,000	2,034,000
Stock surrendered for exercise of stock options, shares				46,000	237,000
Treasury stock shares retired				5,873,000
Treasury stock shares retired, cost	(32,600,000)			(32,568,000)
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock shares retired				5,873,000
Treasury stock shares retired, cost	1,000			1,000
Additional Paid-in Capital [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock shares retired, cost	$ 32,600,000			$ 32,567,000