Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 16,729	$ 49,565	$ 37,588	$ 107,750
Other comprehensive income (loss), net of tax provision:
Foreign currency translation adjustment, net of tax of $0, $0, $0 and $0	3,083	14,897	63,669	(74,052)
Other, net of tax of $0, $(3), $0 and $(2)		8		3
Other comprehensive income (loss)	3,083	14,905	63,669	(74,049)
Comprehensive income	19,812	64,470	101,257	33,701
Less: Comprehensive income attributable to non-controlling interests	167	3,456	530	8,157
Total comprehensive income attributable to Quanta stockholders	$ 19,645	$ 61,014	$ 100,727	$ 25,544