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Leases - Schedule of Components of Lease Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Leases [Abstract]      
Operating lease costs [1] $ 5,938 $ 4,989 $ 4,519
Finance lease costs      
Amortization of leased assets 269    
Interest on lease assets 40    
Net lease costs $ 6,247 $ 4,989 $ 4,519
[1] Excludes short-term leases and variable lease costs, which are immaterial.