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Commitments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Future minimum payments required under the Company's non-cancelable operating leases    
2020 $ 907  
2021 740  
2022 438  
Total minimum lease payments 2,085  
Rent expense 200 $ 100
Lease payments $ 500 $ 300