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OPERATING LEASES - Supplemental Balance Sheet Information (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease assets $ 7,223 $ 7,800
Operating lease liabilities, current portion 1,567 1,544
Operating lease liabilities, net of current portion 5,656 $ 6,256
Total operating lease liabilities $ 7,223  
Weighted average remaining lease term in years 6 years  
Weighted average discount rate 5.10%