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Leases Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Amortization of right-of-use assets $ 34 $ 30
Interest on lease liabilities 10 11
Operating lease cost 3,990 3,107
Short-term lease cost 170 14
Total lease cost $ 4,204 $ 3,162