PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 265,355	$ 261,922
Less: accumulated depreciation	(238,015)	(234,345)
Total property and equipment, net	27,340	27,577
Computer hardware and software, including internal-use software and website development
Property, Plant and Equipment [Line Items]
Property and equipment, gross	252,673	249,208
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,912	10,919
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,770	$ 1,795