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Leases - Maturities of Lease Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Operating leases    
Remainder of 2021 $ 5,744  
2022 7,701  
2023 8,033  
2024 7,832  
2025 8,009  
Thereafter 19,407  
Total lease payments 56,726  
Less imputed interest (11,426)  
Total 45,300 $ 46,561
Sublease income, remainder of 2021 900  
Sublease income, 2022 400  
Sublease income, 2023 $ 400