XML 104 R91.htm IDEA: XBRL DOCUMENT v3.10.0.1
Equity - Non-controlling Interests (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Variable Interest Entity [Line Items]      
Income attributable to non-controlling interests $ 2,661 $ 3,247 $ 1,715
Carrying value of the investments held by Quanta in variable interest entities 9,600 7,800  
Non-controlling interests 1,294 4,058  
Distributions to non-controlling interests 4,038 2,001 $ 761
Decrease in notes receivable 1,400 500  
VIE      
Variable Interest Entity [Line Items]      
Non-controlling interests $ 1,300 $ 4,100