Quarterly report pursuant to Section 13 or 15(d)

LEASES - Maturity of Lease Liabilities (Details)

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LEASES - Maturity of Lease Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
2019 (remaining three months) $ 384  
2020 1,370  
2021 1,966  
2022 1,993  
2023 2,058  
2024 2,120  
Thereafter 3,260  
Total lease payments due 13,151  
Less imputed interest (2,695)  
Total lease liabilities 10,456  
Current operating lease liabilities 669 $ 0
Total lease liabilities $ 9,787 $ 0