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Commitments and Contingencies (Details)
$ in Thousands
3 Months Ended 199 Months Ended
Mar. 31, 2018
USD ($)
Claim
Mar. 31, 2017
USD ($)
Mar. 31, 2018
USD ($)
Claim
Changes in product warranties [Roll forward]      
Balance, beginning of period $ 20,929 $ 24,072  
Liabilities accrued for current year sales 21,242 25,730  
Settlements of warranty claims (21,611) (24,193)  
Balance, end of period $ 20,560 $ 25,609 $ 20,560
Asbestos [Member]      
Loss Contingencies [Line Items]      
Pending claims, approximate number | Claim 1,545   1,545
Payment for settled claims     $ 24,400
Increase from low end of range $ 4,200    
Increase from high end of range 6,300    
Asbestos [Member] | Minimum [Member]      
Loss Contingencies [Line Items]      
Range of possible loss 35,200   35,200
Asbestos [Member] | Maximum [Member]      
Loss Contingencies [Line Items]      
Range of possible loss 54,000   54,000
Asbestos [Member] | Discontinued Operations [Member]      
Loss Contingencies [Line Items]      
Incremental pre-tax provision 6,000    
Asbestos [Member] | Discontinued Operations [Member] | Minimum [Member]      
Loss Contingencies [Line Items]      
Range of possible loss 44,300   44,300
Asbestos [Member] | Discontinued Operations [Member] | Maximum [Member]      
Loss Contingencies [Line Items]      
Range of possible loss $ 79,600   $ 79,600