Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Document Period End Date			Sep. 30, 2022
Revenue	$ 559,671	$ 466,814	$ 1,529,861	$ 1,402,566
Cost of services and products	463,917	406,966	1,312,586	1,217,664
Gross margin	95,754	59,848	217,275	184,902
Selling, general and administrative expense	48,879	44,079	148,589	132,531
Income (loss) from operations	46,875	15,769	68,686	52,371
Interest income	1,396	662	2,959	1,864
Interest expense	(9,552)	(9,616)	(28,614)	(29,752)
Equity in income (losses) of unconsolidated affiliates	496	189	1,108	1,101
Other income (expense), net	(1,222)	(814)	(195)	(4,222)
Income (loss) before income taxes	37,993	6,190	43,944	21,362
Provision (benefit) for income taxes	19,690	13,560	41,131	31,856
Net Income (Loss)	$ 18,303	$ (7,370)	$ 2,813	$ (10,494)
Weighted-average shares outstanding
Basic (in shares)	100,259	99,797	100,160	99,675
Diluted (in shares)	101,310	99,797	101,372	99,675
Earnings (loss) per share
Basic (in dollars per share)	$ 0.18	$ (0.07)	$ 0.03	$ (0.11)
Diluted (in dollars per share)	$ 0.18	$ (0.07)	$ 0.03	$ (0.11)