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Commitments and Contingencies - Future Minimum Operating Lease Payments (Details) - USD ($)
$ in Thousands
1 Months Ended
Feb. 28, 2019
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]    
2019   $ 15,213
2020   7,913
2021   5,522
2022   1,821
2023   695
Thereafter   5,724
Total (1)   $ 36,888
Subsequent Event    
Subsequent Event [Line Items]    
Extended lease 10 years