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Operating Lease Commitments and Rent Expense
12 Months Ended
Dec. 31, 2016
Leases [Abstract]  
Operating Lease Commitments and Rent Expense
6. Operating Lease Commitments and Rent Expense

We lease certain equipment and operating facilities, including our primary operating facility which is leased from a partnership described in Note 7, Related Party Transactions, under non-cancelable operating leases. Approximate future minimum rental payments as of December 31, 2016 under these leases are summarized as follows:

 

(in thousands)

      

2017

   $ 4,149  

2018

     3,724  

2019

     1,892  

2020

     1,847  

2021

     1,799  

Thereafter

     1,757  
  

 

 

 

Total

   $ 15,168  
  

 

 

 

Rent expense, including payments for short-term equipment and storage rentals, was $4.2 million in fiscal 2016, $4.5 in fiscal 2015, and $4.1 million in fiscal 2014.