PROPERTY AND EQUIPMENT, NET - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 34,537	$ 33,651
Less: accumulated depreciation and amortization	(33,298)	(32,136)
Total property and equipment, net	1,239	1,515
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	19,480	19,278
Software and voice recordings
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	10,033	9,714
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	3,871	3,882
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, at cost	$ 1,154	$ 777