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Commitments, Contingencies and Litigation - (Additional Information) (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2019
Jun. 30, 2017
Feb. 29, 2016
Jun. 30, 2019
Mar. 31, 2019
Commitments, Contingencies And Litigation [Line Items]          
Provision for environmental liabilities       $ 1,060 $ 1,081
Belgium Anti-Competition Proceeding          
Commitments, Contingencies And Litigation [Line Items]          
Penalties paid relating to anti-competition investigations     $ 1,962 1,272  
Germany Anti-Competition Proceeding          
Commitments, Contingencies And Litigation [Line Items]          
Penalties paid relating to anti-competition investigations   $ 14,811      
Reserves for anti-competition investigations       $ 0 $ 7,258
Litigation Settlement, Amount Awarded to Other Party $ 7,258