REVENUE AND CONTRACT LIABILITY Club O Reward Unearned Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue, Current	$ 84,447		$ 84,447		$ 72,165
Gift Card and Club O Rewards Breakage	1,400	$ 1,300	2,800	$ 2,200
Club O Reward Points [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Deferred Revenue, Current	$ 10,000		$ 10,000		$ 8,600