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Leases - Components of Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Operating lease cost $ 936 $ 874
Finance lease cost:    
Amortization of right-of-use asset 34 42
Interest on lease liabilities 10 13
Sublease income (72) 0
Total lease cost $ 908 $ 929