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Operating Leases - Minimum Aggregate Future Lease Commitments (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Leases [Abstract]  
2019 $ 76
2020 113
Total future minimum lease payments 189
Less: amounts representing present value adjustment 9
Operating lease liabilities as of June 30, 2019 180
Less: current portion of operating lease liabilities 142
Operating lease liabilities, net of current portion $ 38