LEASES (Details - Additional Information) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Rental expense		$ 83.0
Operating lease not yet commenced	$ 8.8
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	5 years
Operating lease, renewal term	10 years
Lease term of contract	5 years
Operating lease, lease not yet commenced, term of contract	3 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	15 years
Operating lease, renewal term	35 years
Lease term of contract	8 years
Operating lease, lease not yet commenced, term of contract	15 years