LEASES (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$ 17,952	$ 14,709	$ 51,324	$ 43,510
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	2,277	14,251	45,205	67,798
Non-cash net increase due to lease modifications:
Operating lease right-of-use assets	11,726	3,233	7,744	6,383
Operating lease liabilities	$ 11,708	$ 3,199	$ 7,719	$ 6,451