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Acquisitions (Details) - USD ($)
12 Months Ended 17 Months Ended
May 04, 2018
Dec. 31, 2018
Sep. 30, 2019
RIW Limited | Clydebridge Holdings      
Business Acquisition [Line Items]      
Percentage of stock acquired 100.00%    
Clydebridge Holdings      
Business Acquisition [Line Items]      
Percentage of stock acquired 100.00%    
Consideration transferred $ 29,700,000    
Cash acquired 10,000,000.0    
Payments to acquire businesses 29,800,000    
Working capital adjustments $ 100,000    
Purchase price adjustment, reduction in consideration paid   $ 200,000  
Purchase price adjustment, reduction in inventories   $ 200,000  
Escrow deposit disbursements     $ 0