LEASES (Components of Lease Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Total lease cost	$ 19,237	$ 19,699	$ 38,931	$ 41,737
Selling, general and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	17,245	18,851	34,501	37,714
Variable lease cost	1,656	579	3,916	3,214
Short-term lease cost	$ 336	$ 269	$ 514	$ 809