DEFERRED REVENUES AND COSTS - Schedule of Deferred Revenue and Other Costs (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Deferred contract revenues	$ 839,492	$ 837,190
Deferred merchandise trust revenue	103,568	104,304
Deferred merchandise trust unrealized gains (losses)	(13,940)	7,881
Deferred revenues	929,120	949,375
Deferred selling and obtaining costs	$ 117,367	$ 114,944