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Lease Commitments
12 Months Ended
Dec. 31, 2016
Leases, Operating [Abstract]  
Lease Commitments
Lease Commitments

We lease certain office and storage facilities, rail cars and other equipment under long-term operating leases, most of which contain renewal options. At December 31, 2016, the minimum future rental commitments under operating leases having non-cancellable lease terms in excess of one year are as follows:
 
 
(In thousands)
2017
 
$
75,156

2018
 
67,463

2019
 
61,893

2020
 
60,035

2021
 
56,684

Thereafter
 
172,627

Total
 
$
493,858



Rental expense charged to operations was $93.2 million, $107.3 million and $89.8 million for the years ended December 31, 2016, 2015 and 2014, respectively. For the years ended December 31, 2016, 2015 and 2014, rental expense included $8.5 million, $8.9 million and $8.0 million, respectively, in costs attributable to the HEP operations.