Commitments and Contingencies

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Legal Matters

From time to time, we may become involved in routine litigation arising in the ordinary course of business. While the results of such litigation cannot be predicted with certainty, we believe that the final outcome of such matters will not have a material adverse effect on our financial position, results of operations or cash flows.

Operating Leases

Operating lease payments primarily relate to equipment leases and noncancelable operating leases associated with the following spaces that we currently utilize:



Location	Lease expiration
Palo Alto, California headquarters	March 2020
Portland, Oregon office	September 2018
San Francisco, California office	October 2022
Boulder, Colorado office	March 2016
United Kingdom office	May 2018
Israel office	February 2021
Arizona data center	December 2016
New Jersey data center	September 2016
Netherlands data center	October 2016
London data center	March 2017

In addition to the facilities listed above, we also occupy a number of smaller sales and service offices around the world. In addition to our currently occupied space, there are other facility leases that are no longer being utilized by us that have been fully sublet.

Rent expense was as follows (in thousands):



	Year Ended December 31,
	2015		2014		2013
Gross rent expense	$	7,677	$	7,023	$	5,570
Sublease income	254		45		45
Net rent expense	$	7,423	$	6,978	$	5,525

Minimum rentals to be received in the future under subleases as of December 31, 2015 were $0.7 million.

The approximate future minimum lease payments required under operating leases (including for sublet facilities) were as follows (in thousands):



Year ending December 31,
2016	$	7,447
2017	5,057
2018	4,071
2019	1,658
2020	1,363
Thereafter	1,369
	$	20,965

Contractual Commitments

We have commitments under non-cancelable purchase orders or vendor agreements of $3.7 million at December 31, 2015. The non-cancelable purchase order and vendor agreement commitments will be filled at various times through the second quarter of 2017.