Facility covenants include an annual capital expenditure limit of $10,000

No definition available.

Name:	ftek_AnnualCapitalExpenditureLimit
Namespace Prefix:	ftek_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Facility covenants include a minimum tangible net worth of $50,000

+ References

No definition available.

+ Details

Name:	ftek_MinimumTangibleNetWorth
Namespace Prefix:	ftek_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Facility covenants include an annual capital expenditure limit of $10,000 and a minimum tangible net worth of $50,000, adjusted upward for 50% of net income generated and 100% of all capital issuances.

+ References

No definition available.

+ Details

Name:	ftek_PercentageOfCapitalIssuances
Namespace Prefix:	ftek_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Facility covenants include an annual capital expenditure limit of $10,000 and a minimum tangible net worth of $50,000, adjusted upward for 50% of net income generated

+ References

No definition available.

+ Details

Name:	ftek_PercentageOfNetIncome
Namespace Prefix:	ftek_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityCovenantTerms
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.(a),16(a)(1))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Subparagraph a(1)

-Article 7

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Subparagraph 2, 3

-Article 9

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt Financing (Detail)	1 Months Ended	12 Months Ended			12 Months Ended					0 Months Ended
Debt Financing (Detail)	Jun. 30, 2011	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jun. 30, 2011 Amount Available for Increase Upon Approval of Lender USD ($)	Dec. 31, 2014 Leverage Ratio	Dec. 31, 2014 China Facility USD ($)	Dec. 31, 2013 China Facility USD ($)	Jun. 28, 2013 China Facility USD ($)	Jun. 28, 2013 China Facility CNY	Jun. 27, 2014 People's Bank of China Base Rate China Facility	Jun. 30, 2014 Minimum	Jun. 30, 2014 Maximum	Jun. 30, 2011 Original Amount USD ($)	Jun. 28, 2012 Original Amount China Facility CNY
Line of Credit Facility, Expiration Date	Jun. 30, 2015
Line of Credit Facility, Maximum Borrowing Capacity				$ 25,000,000				$ 5,688,000	35,000,000				$ 15,000,000	35,000,000
Debt Instrument, Basis Spread on Variable Rate										125.00%	250.00%	375.00%
Short-term debt		1,625,000us-gaap_ShortTermBorrowings	1,636,000us-gaap_ShortTermBorrowings
Line of Credit Facility, Covenant Terms					2.0:1.0
Annual Capital Expenditure Limit		10,000,000ftek_AnnualCapitalExpenditureLimit
Minimum Tangible Net Worth		50,000,000ftek_MinimumTangibleNetWorth
Percentage of Net Income (as a percent)		50.00%ftek_PercentageOfNetIncome
Percentage of Capital Issuances		100.00%ftek_PercentageOfCapitalIssuances
Letters of Credit Outstanding, Amount		8,284,000	3,478,000			336,000	646,000
Line of Credit Facility, Remaining Borrowing Capacity		$ 6,716,000	$ 11,522,000			$ 3,727,000	$ 3,443,000
Line of Credit Facility, Commitment Fee Percentage		0.25%
Line of Credit Facility, Interest Rate at Period End (as a percent)						7.00%	7.00%