v3.26.1
Segments - Summary of Revenues, Significant Expenses and Operating Income (Loss) by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Information [Line Items]        
Revenues $ 889,450 $ 873,707 $ 1,759,051 $ 1,695,499
Compensation and benefits 502,180 489,973 988,228 951,389
Reimbursable expenses 132,047 137,527 278,221 263,739
Other segment items 200,528 188,089 383,189 388,080
Depreciation and amortization 51,271 50,698 102,842 101,059
Loss on divestiture 1,732 0 718 0
Income from investment in European joint venture   (2,591)   (4,158)
Total operating expenses 887,758 863,696 1,753,198 1,700,109
Total segment operating (loss) income 1,692 10,011 5,853 (4,610)
Branded Services [Member]        
Segment Reporting Information [Line Items]        
Revenues 235,979 295,221 492,971 585,062
Compensation and benefits 142,464 165,714 288,378 326,559
Reimbursable expenses 11,569 38,544 42,395 71,505
Other segment items 73,199 72,533 139,205 153,995
Depreciation and amortization 31,073 31,561 62,396 63,023
Loss on divestiture 1,732   718  
Income from investment in European joint venture   (2,591)   (4,158)
Total operating expenses 260,037 305,761 533,092 610,924
Total segment operating (loss) income (24,058) (10,540) (40,121) (25,862)
Experiential Services [Member]        
Segment Reporting Information [Line Items]        
Revenues 416,311 347,706 801,791 661,726
Compensation and benefits 197,759 169,687 384,992 325,510
Reimbursable expenses 120,478 98,983 235,826 192,234
Other segment items 68,038 57,493 128,138 115,406
Depreciation and amortization 11,324 10,684 22,623 21,221
Loss on divestiture 0   0  
Income from investment in European joint venture   0   0
Total operating expenses 397,599 336,847 771,579 654,371
Total segment operating (loss) income 18,712 10,859 30,212 7,355
Retailer Services [Member]        
Segment Reporting Information [Line Items]        
Revenues 237,160 230,780 464,289 448,711
Compensation and benefits 161,957 154,572 314,858 299,320
Reimbursable expenses 0 0 0 0
Other segment items 59,291 58,063 115,846 118,679
Depreciation and amortization 8,874 8,453 17,823 16,815
Loss on divestiture 0   0  
Income from investment in European joint venture   0   0
Total operating expenses 230,122 221,088 448,527 434,814
Total segment operating (loss) income $ 7,038 $ 9,692 $ 15,762 $ 13,897