Quarterly report pursuant to Section 13 or 15(d)

LEASES - Lease Cost (Details)

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LEASES - Lease Cost (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Components of lease expense:    
Operating lease cost $ 555 $ 1,219
Short-term lease cost 620 835
Total lease cost $ 1,175 $ 2,054