Segment Information - Reconciliation of Assets from Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of assets from segment
Total Assets	$ 1,037,630	$ 853,224	$ 1,318,691
Total Depreciation and Amortization	53,750	56,565	58,964
Capital expenditures	57,936	53,567	76,147
Pursuit
Reconciliation of assets from segment
Total Assets	725,946	620,413	589,205
Total Depreciation and Amortization	32,469	28,393	23,154
Capital expenditures	54,325	43,176	49,934
GES
Reconciliation of assets from segment
Total Assets	242,146	184,806	608,254
Total Depreciation and Amortization	21,247	28,075	35,581
Capital expenditures	3,135	10,391	26,197
Corporate and other
Reconciliation of assets from segment
Total Assets	69,538	48,005	121,232
Total Depreciation and Amortization	34	97	229
Capital expenditures	$ 476		$ 16