v3.26.3
Segment Information (Details 1)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
reportable_segment
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting [Line Items]          
Number of reportable segments | reportable_segment     5    
Revenues $ 816,027 $ 742,998 $ 2,306,477 $ 2,101,556  
Adjusted EBITDA (144,836) (115,987) (343,208) (292,571)  
Stock-based compensation (28,920) (12,646) (61,735) (44,143)  
Depreciation and amortization 48,300 44,260 136,395 127,635  
Deferred Acquisition Consideration Expense (Income) (7,675) 13,348 (26,766) 9,911  
Impairment and other losses 1,028 466 1,219 466  
Other items, net 10,854 11,050 47,846 27,868  
Operating income 48,059 60,913 69,247 102,370  
Interest and Debt Expense (23,993) (25,196) (69,587) (72,007)  
Foreign exchange, net 2,244 (366) (172) (484)  
Other, net 2,526 (2,032) 3,394 (2,143)  
Nonoperating Income (Expense) (19,223) (27,594) (66,365) (74,634)  
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest 28,836 33,319 2,882 27,736  
Income tax expense 10,882 9,555 7,646 13,950  
Income Loss From Continuing Operations Before Equity In Earnings Of Non-consolidated Affiliates 17,954 23,764 (4,764) 13,786  
Income (Loss) from Equity Method Investments 442 (1) 512 18  
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest 18,396 23,763 (4,252) 13,804  
Net Income (Loss) Attributable to Noncontrolling Interest (277) 856 1,282 2,637  
Net Income (Loss) Attributable to Parent 18,119 24,619 (2,970) 16,441  
Goodwill 1,598,491   1,598,491   $ 1,595,238
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Long-Lived Asset, Excluding Financial Instrument, Customer Relationship, Mortgage Servicing Right, Deferred Policy Acquisition Cost, and Deferred Tax Asset, Amount 259,300   259,300   286,600
Non-US          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Long-Lived Asset, Excluding Financial Instrument, Customer Relationship, Mortgage Servicing Right, Deferred Policy Acquisition Cost, and Deferred Tax Asset, Amount 63,400   63,400   75,000
UNITED STATES          
Segment Reporting [Line Items]          
Revenues 660,217 569,244 1,828,688 1,638,659  
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Long-Lived Asset, Excluding Financial Instrument, Customer Relationship, Mortgage Servicing Right, Deferred Policy Acquisition Cost, and Deferred Tax Asset, Amount 196,000   196,000   $ 211,600
Operating Segments          
Segment Reporting [Line Items]          
Revenues 826,216 750,308 2,334,697 2,118,947  
Billable costs 151,765 128,492 426,557 326,374  
Staff related costs 372,329 373,986 1,120,123 1,103,510  
General and Administrative Expense 76,880 73,625 228,541 222,524  
Unbillable and other costs 52,862 42,384 151,781 132,967  
Adjusted EBITDA (172,380) (131,821) (407,695) (333,572)  
Operating Segments | Marketing Services          
Segment Reporting [Line Items]          
Revenues 255,445 291,089 786,650 817,294  
Billable costs 37,764 51,128 113,980 124,534  
Staff related costs 126,795 138,310 390,338 401,036  
General and Administrative Expense 24,677 26,835 74,036 83,338  
Unbillable and other costs 24,254 17,187 75,327 61,801  
Adjusted EBITDA (41,955) (57,629) (132,969) (146,585)  
Operating Segments | Digital Transformation [Member]          
Segment Reporting [Line Items]          
Revenues 127,176 104,445 349,756 294,301  
Billable costs 8,517 8,334 23,722 17,210  
Staff related costs 73,620 62,845 208,901 186,972  
General and Administrative Expense 6,830 6,981 20,966 19,599  
Unbillable and other costs 71 401 381 1,178  
Adjusted EBITDA (38,138) (25,884) (95,786) (69,342)  
Operating Segments | Media & Commerce          
Segment Reporting [Line Items]          
Revenues 176,857 183,112 534,561 509,416  
Billable costs 18,113 20,570 68,801 49,505  
Staff related costs 95,403 98,212 291,338 291,228  
General and Administrative Expense 26,650 24,225 74,902 70,963  
Unbillable and other costs 16,917 15,554 45,820 44,486  
Adjusted EBITDA (19,774) (24,551) (53,700) (53,234)  
Operating Segments | Communications          
Segment Reporting [Line Items]          
Revenues 210,913 145,086 552,767 420,556  
Billable costs 87,229 48,455 219,894 135,109  
Staff related costs 59,939 56,650 178,086 172,273  
General and Administrative Expense 13,432 12,516 40,634 37,042  
Unbillable and other costs 2,455 2,344 6,291 7,103  
Adjusted EBITDA (47,858) (25,121) (107,862) (69,029)  
Operating Segments | The Marketing Cloud          
Segment Reporting [Line Items]          
Revenues 55,825 26,576 110,963 77,380  
Billable costs 142 5 160 16  
Staff related costs 16,572 17,969 51,460 52,001  
General and Administrative Expense 5,291 3,068 18,003 11,582  
Unbillable and other costs 9,165 6,898 23,962 18,399  
Adjusted EBITDA (24,655) 1,364 (17,378) 4,618  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment          
Segment Reporting [Line Items]          
Revenues (10,200) (7,300) 28,200 17,400  
Corporate Segment and Other Operating Segment          
Segment Reporting [Line Items]          
Adjusted EBITDA $ (27,544) $ 15,834 $ (64,487) $ (41,001)