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Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Jan. 19, 2018
Dec. 31, 2017
Dec. 22, 2017
Debt Instrument [Line Items]        
Notes payable   $ 100,000   $ 300,000
Total debt $ 637,813      
Current portion of debt 28,438   $ 19,688  
Long-term debt 988,185   593,572  
USD Denominated Term Loan [Member]        
Debt Instrument [Line Items]        
Loans payable to bank 637,813   194,063  
Debt issuance costs, noncurrent, net 4,859   629  
Line of Credit [Member]        
Debt Instrument [Line Items]        
Long-term line of credit 0   125,414  
Senior Notes [Member]        
Debt Instrument [Line Items]        
Notes payable 400,000   300,000  
Debt issuance costs, noncurrent, net 16,331   5,588  
Secured Debt [Member]        
Debt Instrument [Line Items]        
Total debt 1,037,813   619,477  
Current portion of debt 28,438   19,688  
Long-term debt $ 988,185   $ 593,572