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Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2022
[1]
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 22,434 $ 19,628
Less: accumulated depreciation and amortization (18,384) (16,811)
Property and equipment, net 4,050 2,817
Computer and Other Related Equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 14,939 13,373
Purchased and Internally Developed Software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 3,090 2,483
Furniture and Fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,273 1,271
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,732 1,732
Construction in Progress    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 1,400 $ 769
[1]

Includes the original cost of fully depreciated fixed assets which was $13.6 million at December 31, 2022.