Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 105,553	$ 72,513	$ 187,554	$ 151,726
Foreign currency translation adjustments	13,738	6,998	(17,464)	14,399
Total comprehensive income	119,291	79,511	170,090	166,125
Total comprehensive income attributable to noncontrolling interests	(47)	(36)	(105)	(76)
Total comprehensive income attributable to common stockholders	$ 119,244	$ 79,475	$ 169,985	$ 166,049