LEASES (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$ 16,481	$ 14,105	$ 33,372	$ 28,801
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	11,676	40,722	42,928	53,547
Non-cash net (decrease)/increase due to lease modifications:
Operating lease right-of-use assets	(8,566)	8,324	(3,982)	3,150
Operating lease liabilities	$ (8,562)	$ 8,358	$ (3,989)	$ 3,252