DEFERRED REVENUES AND COSTS - Schedule of Deferred Revenue and Other Costs (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Deferred contract revenues	$ 829,082	$ 830,602
Deferred merchandise trust revenue	100,329	92,718
Deferred merchandise trust unrealized gains (losses)	14,731	(9,034)
Deferred revenues	944,142	914,286
Deferred selling and obtaining costs	$ 112,916	$ 112,660