Property, Plant and Equipment - Summary of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	$ 16,653	$ 16,695
Accumulated depreciation and amortization	(11,963)	(11,330)
Property, plant, and equipment, net before land	4,690	5,365
Land	156	160
Property, plant, and equipment, net	4,846	5,525
Building
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	201	205
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	1,251	1,251
Equipment and Computers
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	14,682	14,628
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	519	519
Construction in Progress
Property Plant And Equipment [Line Items]
Total property, plant, and equipment before depreciation and land	$ 0	$ 92