LEASES (Lease Costs and Other Information) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost		$ 14,994	$ 14,930
Short-term lease cost		1,325	1,360
Variable lease cost		1,500	2,989
Total lease costs		17,819	19,279
Cash paid for operating leases		12,293	18,574
Right-of-use assets obtained in exchange for operating lease liabilities	[1]	$ 24,790	$ 177,509
Weighted average remaining lease term		6 years 3 months 18 days	5 years 8 months 12 days
Weighted average discount rate (percent)		4.70%	4.70%

[1] For the three months ended March 31, 2019, we implemented ASC 842, Leases. The previously reported amount includes $176.1 million for operating leases existing on January 1, 2019 and $1.4 million for operating leases that commenced in the first quarter of 2019