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Basis of Presentation and Significant Accounting Policies - Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]    
Beginning balance $ 285,502 $ 283,708
Acquisitions 16,609  
Translation (8,946) 1,794
Ending balance 293,165 285,502
Government Operations    
Goodwill [Roll Forward]    
Beginning balance 155,939 155,939
Acquisitions 16,609  
Translation (461) 0
Ending balance 172,087 155,939
Commercial Operations    
Goodwill [Roll Forward]    
Beginning balance 129,563 127,769
Acquisitions 0  
Translation (8,485) 1,794
Ending balance $ 121,078 $ 129,563