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Leases - Schedule of Lease Cost (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Leases [Abstract]  
Operating lease cost $ 405
Variable lease cost 34
Finance lease cost:  
Amortization of leased assets 18
Interest on lease liabilities 8
Sublease income (21)
Net lease cost 444
Operating cash flows from operating leases 192
Leased assets obtained in exchange from new operating lease liabilities $ 16,478