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Commitments and Contingencies
 12 Months Ended
Dec. 31, 2017
Leases, Operating [Abstract]  
Commitments and Contingencies Disclosure
COMMITMENTS AND CONTINGENCIES
Operating Leases
The Company leases certain of its facilities and equipment under operating leases. The future minimum lease payments under non-cancelable operating leases are as follows at December 31, 2017:
2018
$
33,939

2019
25,292

2020
17,132

2021
11,729

2022
9,745

Thereafter
11,289

Total
$
109,126


Rent expense for operating leases amounted to $36.9 million, $34.9 million, and $33.2 million for the years ended December 31, 2017, 2016, and 2015, respectively.
Legal
The Company is party to various legal proceedings, including certain environmental matters, incidental to the normal course of business. Management does not expect that any of such proceedings will have a material adverse effect on the Company’s financial condition, results of operations, or cash flows.