Quarterly report pursuant to Section 13 or 15(d)

Summary of Property, Plant, and Equipment (Detail)

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Summary of Property, Plant, and Equipment (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land $ 9,496 $ 8,952
Accumulated depreciation and amortization (8,284) (8,049)
Property, plant, and equipment, net before land 1,212 903
Land 161 164
Property, plant, and equipment, net 1,373 1,067
Building    
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land 197 211
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land 318 89
Equipment and Computers    
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land 8,353 8,150
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land 475 471
Construction in Progress    
Property Plant And Equipment [Line Items]    
Property, plant, and equipment gross, excluding land $ 153 $ 31