Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Document Period End Date			Jun. 30, 2022
Revenue	$ 524,031	$ 498,199	$ 970,190	$ 935,752
Cost of services and products	447,990	429,802	848,669	810,698
Gross margin	76,041	68,397	121,521	125,054
Selling, general and administrative expense	53,191	45,578	99,710	88,452
Income (loss) from operations	22,850	22,819	21,811	36,602
Interest income	767	683	1,563	1,202
Interest expense, net of amounts capitalized	(9,619)	(9,729)	(19,062)	(20,136)
Equity in income (losses) of unconsolidated affiliates	318	378	612	912
Other income (expense), net	583	(1,955)	1,027	(3,408)
Income (loss) before income taxes	14,899	12,196	5,951	15,172
Provision (benefit) for income taxes	11,179	$ 5,955	21,441	18,296
Net Income (Loss)	$ 3,720		$ (15,490)	$ (3,124)
Weighted-average shares outstanding
Basic (in shares)	100,256	99,762	100,110	99,613
Diluted (in shares)	101,430	100,847	100,110	99,613
Earnings (loss) per share
Basic (in dollars per share)	$ 0.04	$ 0.06	$ (0.15)	$ (0.03)
Diluted (in dollars per share)	$ 0.04	$ 0.06	$ (0.15)	$ (0.03)