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Lease Commitments - Summary of Future Annual Minimum Lease Payments Under Operating Lease (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
2020 $ 110  
2021 171  
2022 176  
2023 181  
2024 186  
Thereafter 80  
Total minimum lease payments 904  
Less: amount representing interest (150)  
Present value of operating lease liabilities 754 $ 796
Less: operating lease liabilities, current (148) (161)
Operating lease liabilities $ 606 $ 635
Weighted-average remaining lease term (in years) 5 years 29 days  
Weighted-average incremental borrowing rate 7.25%