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LEASES (Lease expense and other information related to operating leases) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Lease expenses:    
Operating lease expense $ 344 $ 156
Short term lease expense 140 79
Total lease expense 484 235
Other information related to leases [Abstract]    
Operating cash flows from operating leases 385 160
Right-of-use assets obtained in exchange for new operating lease liabilities $ 75 $ 5,092
Weighted-average remaining lease term - operating leases (in years) 25 years 6 months 15 years 4 months 24 days
Weighted-average discount rate - operating leases 2.10% 2.40%