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Business Segment and Geographic Disclosures (Detail) - Assets by Geographic Area (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Assets    
Assets $ 86,463us-gaap_NoncurrentAssets $ 91,471us-gaap_NoncurrentAssets
United States    
Assets    
Assets 59,176us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US		 64,324us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
Foreign    
Assets    
Assets $ 27,287us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= ftek_ForeignMember		 $ 27,147us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= ftek_ForeignMember