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Derivative Financial Instruments Derivative Financial Instruments (Details 3) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Derivative [Line Items]    
Derivative, Notional Amount $ 120,253invest_DerivativeNotionalAmount $ 119,008invest_DerivativeNotionalAmount
Interest Rate Swap [Member] | March 15, 2013 Interest rate swap [Member]    
Derivative [Line Items]    
Contract date Mar. 15, 2013  
Derivative, Notional Amount 60,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= flir_March152013InterestRateSwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		  
Fixed rate 1.02%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeByNatureAxis
= flir_March152013InterestRateSwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		  
Effective date Apr. 05, 2013  
Maturity date Mar. 31, 2019  
Interest Rate Swap [Member] | March 29, 2013 Interest rate swap [Member]    
Derivative [Line Items]    
Contract date Mar. 29, 2013  
Derivative, Notional Amount $ 60,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= flir_March292013InterestrateswapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		  
Fixed rate 0.97%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeByNatureAxis
= flir_March292013InterestrateswapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		  
Effective date Apr. 05, 2013  
Maturity date Mar. 31, 2019