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LEASES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lease cost    
Operating lease cost $ 7,643 $ 7,038
Sublease income (37) (95)
Total lease cost 7,606 6,943
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases 7,363 7,019
Operating right-of-use assets obtained in exchange for lease liabilities $ 7,843 $ 48,101
Weighted-average remaining lease term-operating leases 7 years 7 months 6 days 7 years 9 months 18 days
Weighted-average discount rate-operating leases 2.91% 3.20%
Renewal options true  
Minimum    
Lease cost    
Renewal term 5 years  
Maximum    
Lease cost    
Renewal term 10 years