LEASES (Schedule of Lease Assets and Liabilities, Weighted-Average Lease Term and Discount Rate) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
LEASES [Abstract]
Operating lease right-of-use assets	$ 441,656
Accumulated amortization	(33,467)
Total lease assets	408,189	$ 0
Less: Current obligations under leases	29,971
Noncurrent operating liabilities	388,042	$ 0
Total lease liabilities	$ 418,013
Weighted-average remaining lease term, Operating leases	9 years 10 months 24 days
Weighted-average discount rate, Operating leases	4.30%