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Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Right of use lease asset $ 163,808    
Lease liabilities 169,723    
Impact on Retained earnings $ (184,896)   $ (121,215)
ASU 2016-02      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Right of use lease asset   $ 176,100  
Lease liabilities   187,400  
Impact on Retained earnings   $ 200