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Leasing - Components of Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Operating lease cost $ 1,174 $ 1,142
Variable lease cost 164 96
Short-term lease cost 0 0
Sublease income (8) (8)
Total lease cost $ 1,330 $ 1,230