Equipment and Improvements - Summary of Equipment and Improvements (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 8,896	$ 14,556
Less accumulated depreciation and amortization	(8,013)	(13,058)
Equipment and improvements, net	883	1,498
Computer hardware, software, and equipment
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	6,653	10,347
Leasehold improvements
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	1,440	3,381
Office furniture and fixtures
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 803	$ 828