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LEASES - Future minimum commitments of operating leases (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Leases [Abstract]  
2019 (remainder) $ 587
2020 2,100
2021 1,947
2022 1,417
2023 711
Thereafter 2,977
Total minimum lease payments 9,739
Less imputed interest (2,264)
Total lease liabilities $ 7,475