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Derivatives (Details)
$ in Millions
6 Months Ended
Jun. 30, 2019
USD ($)
Derivative [Line Items]  
Unrealized losses reclassified from accumulated other comprehensive losses to realized losses $ (0.1)
Interest rate swap contract  
Derivative [Line Items]  
Derivative, notional amount 20.0
Foreign currency forward contracts  
Derivative [Line Items]  
Derivative, notional amount $ 9.3