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Leases - Narrative (Details)
3 Months Ended
Mar. 31, 2019
USD ($)
$ / mo
Leases [Abstract]  
Monthly rent expense (in usd per month) 750
Automatic annual increase in monthly rent expense (in usd per month) 25
Incremental borrowing rate 11.00%
Operating lease expense | $ $ 2,250
Remaining lease term 9 years 6 months