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Leases (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Lessor, Lease, Description [Line Items]      
Operating lease assets $ 69,042   $ 0
Operating lease, liability $ 69,578    
Operating lease, renewal term 5 years    
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
2019     19,800
2020     15,100
2021     11,500
2022     8,100
2023     5,400
2024     $ 7,200
Minimum      
Lessor, Lease, Description [Line Items]      
Lessee, operating lease, remaining lease term 1 year    
Maximum      
Lessor, Lease, Description [Line Items]      
Lessee, operating lease, remaining lease term 20 years    
Accounting Standards Update 2016-02      
Lessor, Lease, Description [Line Items]      
Operating lease assets   $ 70,500  
Operating lease, liability   $ 70,500