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Leases - Minimum Lease Payments (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Leases [Abstract]    
Remainder of 2019 $ 12,897  
2020 9,514  
2021 7,076  
2022 6,623  
2023 6,690  
Thereafter 16,428  
Total future minimum lease payments 59,228  
Less: Imputed interest (11,672)  
Total $ 47,556 $ 50,300