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Commitments and Contingencies (Details)
€ in Millions, CAD in Millions, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2016
EUR (€)
Dec. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2017
CAD
Jul. 07, 2016
USD ($)
Rochester, New Hampshire            
Loss Contingencies [Line Items]            
Expense associated with expected costs of site investigation     $ 0.2      
Texel | Quebec, Canada            
Loss Contingencies [Line Items]            
Indemnification assets, minimum estimated outcome           $ 0.9
Indemnification assets, maximum estimated outcome           $ 1.5
Environment remediation indemnity secured by environmental escrow account       $ 2.3 CAD 3.0  
Environmental remediation indemnity secured by general escrow account       10.8 14.0  
Environmental remediation indemnity secured by general escrow account, reduced amount after share purchase agreement       5.4 CAD 7.0  
Texel | Quebec, Canada | Environmental Contamination            
Loss Contingencies [Line Items]            
Accrual for environmental liability   $ 0.9   1.4    
Accrual for environmental liability, revision of estimate       0.6    
Accrual for environmental liability, including revision (fully offset)       1.5    
Reduction to accrual for environmental liability, payments       0.1    
Lydall Gerhardi | German Federal Cartel Office, Bundeskartellamt            
Loss Contingencies [Line Items]            
Litigation settlement amount awarded to other party € 3.3     $ 3.8    
Litigation settlement expense € 3.3 $ 3.5