LEASES - Supplemental information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
Operating cash flows from operating leases	$ 12,997	$ 13,109
Operating leases	701	$ 307,618
Supplemental balance sheet information [Abstract]
Operating lease right-of-use assets	248,501		$ 259,613
Operating lease liabilities (current)	34,539		35,335
Operating lease liabilities (noncurrent)	243,806		253,346
Total	$ 278,345		$ 288,681
Weighted Average Remaining Lease Term - Operating	8 years		8 years
Weighted Average Discount Rate - Operating	4.90%		4.90%