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Leases
12 Months Ended
Dec. 31, 2016
Leases [Abstract]  
Leases
Leases
The Company enters into noncancelable operating lease agreements for equipment, buildings and vehicles. The minimum lease payments for the noncancelable operating lease agreements are as follows (in thousands):
 
2017
 
$
18,145

2018
 
14,408

2019
 
10,561

2020
 
8,029

2021
 
7,604

Thereafter
 
23,033


Rent expense for noncancelable operating leases approximated $15.1 million, $14.1 million and $12.5 million for the years ended December 31, 2016, 2015 and 2014, respectively. The leases are generally renewable at the Company’s option for periods of one to five years.