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Goodwill and Other Intangible Assets, net - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2018
Dec. 31, 2022
Oct. 01, 2020
Jul. 13, 2017
Jun. 15, 2015
Goodwill and Intangible Assets [Line Items]                    
Goodwill $ 27,210,000   $ 27,210,000   $ 27,210,000          
Amortization expense 693,000 $ 693,000 1,386,000 $ 1,386,000            
Data and Analytics Services [Member]                    
Goodwill and Intangible Assets [Line Items]                    
Goodwill $ 18,783,000   18,783,000   18,783,000   $ 24,083,000      
Goodwill impairment     $ 0   $ 5,300,000          
Hudson IT [Member]                    
Goodwill and Intangible Assets [Line Items]                    
Goodwill                   $ 8,400,000
Info Trellis Inc [Member]                    
Goodwill and Intangible Assets [Line Items]                    
Goodwill                 $ 27,400,000  
Goodwill impairment           $ 9,700,000        
Amber Leaf Partners Inc [Member]                    
Goodwill and Intangible Assets [Line Items]                    
Goodwill               $ 6,400,000