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Related Party Transactions (CCI) (Narrative) (Details) - CCI [Member] - Immediate Family Member of Management [Member] - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Related Party Transaction [Line Items]      
Equity investment, ownership percentage 15.00%    
Machinery and Equipment [Member]      
Related Party Transaction [Line Items]      
Payments, net of rebates, related party $ 6,000,000 $ 5,900,000  
Payables, related party 6,300,000   $ 4,900,000
Equipment [Member]      
Related Party Transaction [Line Items]      
Revenue, related party 0 $ 0  
Receivables, related party     $ 300,000
Proceeds from collection, related party $ 0