XML 35 R21.htm IDEA: XBRL DOCUMENT v3.10.0.1
Leases
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Leases

12. Leases

The Company incurred rent expense of $105.2 million, $48.9 million and $25.3 million for the years ended December 31, 2018, 2017 and 2016, respectively.  Rent expense is primarily related to short-term equipment rentals that are generally passed through to customers.  

Future minimum rental payments required under operating leases having initial or remaining non-cancelable lease terms in excess of one year at December 31, 2018 are as follows (in thousands):

 

Year ending December 31,

 

 

 

 

2019

 

$

11,408

 

2020

 

 

9,069

 

2021

 

 

6,543

 

2022

 

 

4,625

 

2023

 

 

2,663

 

Thereafter

 

 

6,552

 

Total

 

$

40,860