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Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
Real estate leases, renewal term 8 years  
Operating leases    
ROU assets, net $ 167,585 $ 0
Lease liabilities, short-term 27,253 0
Lease liabilities, long-term 143,717 $ 0
Finance Leases    
ROU assets, net, 1,504  
Lease liabilities, short-term 663  
Lease liabilities, long-term $ 829