Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 20,859	$ 58,185
Other comprehensive income (loss), net of tax provision:
Foreign currency translation adjustment, net of tax of $0 and $0	60,586	(88,949)
Other, net of tax of $0 and $1		(5)
Other comprehensive income (loss)	60,586	(88,954)
Comprehensive income (loss)	81,445	(30,769)
Less: Comprehensive income attributable to non-controlling interests	363	4,701
Total comprehensive income (loss) attributable to Quanta stockholders	$ 81,082	$ (35,470)