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Leases - Schedule of Components of Lease Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Leases [Abstract]      
Operating lease costs [1] $ 5,640 $ 5,938 $ 4,989
Finance lease costs:      
Amortization of leased assets 1,451 269  
Interest on lease assets 153 40  
Net lease costs $ 7,244 $ 6,247 $ 4,989
[1] Excludes short-term leases and variable lease costs, which are immaterial.