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Leases (Components of Lease Expense and Other Lease Information) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases [Abstract]    
Operating lease cost $ 790 $ 540
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases 436 551
Right-of-use assets obtained in exchange for new operating lease liabilities