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Leases - Schedule of Future Lease Payments (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
Remainder of 2019 $ 6,207  
2020 9,188  
2021 7,636  
2022 4,825  
2023 4,028  
After 2023 32,700  
Total future minimum operating lease payments 64,584  
Less: Imputed interest 13,748  
Present value of operating lease liabilities 50,836  
Less: Current operating lease liabilities 10,126  
Noncurrent operating lease liabilities $ 40,710 $ 0