Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenues	$ 439,743	$ 427,216	$ 497,647	$ 1,403,627	$ 1,487,314
Brazil [Member]
Segment Reporting Information [Line Items]
Revenues	19,296	19,117	25,404	64,902	66,825
Non-US [Member]
Segment Reporting Information [Line Items]
Revenues	240,865	238,362	277,934	752,443	823,030
Oil and Gas [Member]
Segment Reporting Information [Line Items]
Revenues	$ 357,178	$ 347,613	$ 420,426	$ 1,150,078	$ 1,254,286