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Segment Information - Reconciliation of Assets from Reportable Segments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting Information [Line Items]    
Depreciation expense $ 11,332 $ 10,332
Amortization 1,988 2,143
Capital expenditures 20,721 11,384
Pursuit    
Segment Reporting Information [Line Items]    
Depreciation expense 8,623 8,134
Amortization 1,113 1,161
Capital expenditures 16,387 7,727
Spiro    
Segment Reporting Information [Line Items]    
Depreciation expense 561 500
Amortization 78 63
Capital expenditures 380 647
GES-Exhibitions    
Segment Reporting Information [Line Items]    
Depreciation expense 2,121 1,678
Amortization 797 919
Capital expenditures 3,951 3,008
Corporate And Other    
Segment Reporting Information [Line Items]    
Capital expenditures 3 2
Corporate    
Segment Reporting Information [Line Items]    
Depreciation expense $ 27 $ 20