v3.26.3
Segment Information and Geographical Data (Geographic Revenue before Reimbursements) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 25, 2026
Sep. 26, 2025
Sep. 25, 2026
Sep. 26, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue $ 69,790 $ 73,111 $ 207,915 $ 229,875
United States [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 53,289 58,077 165,300 184,785
Europe (U.K., Germany, France, Switzerland and Spain) [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue 9,993 8,366 25,138 25,579
Other (Australia, Canada, India and Uruguay) [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Total revenue $ 6,508 $ 6,668 $ 17,477 $ 19,511