LEASES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Leases [Abstract]
Term of option to terminate	1 year
Components of Lease Expense [Abstract]
Operating lease cost	$ 9,000	$ 8,724
Variable lease cost	53	18
Short-term lease cost	369	240
Total lease cost	9,422	8,982
Rental expense			$ 9,000
Cash paid for amounts included in the measurement of lease liabilities [Abstract]
Operating cash outflows for operating leases	8,478	7,938
Right-of-use assets obtained in exchange for lease obligations [Abstract]
Operating leases	3,519	14,145
Operating leases [Abstract]
Operating lease right-of-use assets	$ 34,908	39,895
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Operating lease liabilities	$ 35,857	$ 40,913
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiability	us-gaap:OperatingLeaseLiability
Weighted average remaining lease term [Abstract]
Operating leases	6 years 1 month 6 days	6 years 7 months 6 days
Weighted average discount rate [Abstract]
Operating leases	2.82%	2.95%
Minimum [Member]
Operating Leases [Abstract]
Remaining term of lease	1 year
Term of option to extend	1 year
Maximum [Member]
Operating Leases [Abstract]
Remaining term of lease	14 years
Term of option to extend	40 years