v3.26.1
Segments - Summary of Revenues, Significant Expenses and Operating Income (Loss) by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Revenues $ 869,601 $ 821,792
Compensation and benefits 486,048 461,416
Reimbursable expenses 146,173 126,209
Other segment items 182,662 199,994
Depreciation and amortization 51,570 50,361
Income from investment in European joint venture and other   (1,567)
Gain on divestiture (1,014)  
Total operating expenses 865,439 836,413
Total segment operating (loss) income 4,162 (14,621)
Branded Services [Member]    
Segment Reporting Information [Line Items]    
Revenues 256,992 289,841
Compensation and benefits 138,664 160,845
Reimbursable expenses 30,825 32,959
Other segment items 73,256 81,464
Depreciation and amortization 31,322 31,462
Income from investment in European joint venture and other   (1,567)
Gain on divestiture (1,014)  
Total operating expenses 273,053 305,163
Total segment operating (loss) income (16,061) (15,322)
Experiential Services [Member]    
Segment Reporting Information [Line Items]    
Revenues 385,480 314,020
Compensation and benefits 201,791 155,823
Reimbursable expenses 115,348 93,250
Other segment items 45,543 57,914
Depreciation and amortization 11,299 10,537
Total operating expenses 373,981 317,524
Total segment operating (loss) income 11,499 (3,504)
Retailer Services [Member]    
Segment Reporting Information [Line Items]    
Revenues 227,129 217,931
Compensation and benefits 145,593 144,748
Other segment items 63,863 60,616
Depreciation and amortization 8,949 8,362
Total operating expenses 218,405 213,726
Total segment operating (loss) income $ 8,724 $ 4,205