Leases

The Company operates certain administrative, manufacturing, warehouse and testing facilities and equipment under lease arrangements that are accounted for as operating leases. Total rental expense was $14.4 million, $15.0 million and $12.0 million for 2016, 2015 and 2014, respectively.

Future minimum operating lease payments at December 31, 2016 were as follows (in thousands):



2017	$	13,900
2018	12,805
2019	11,793
2020	7,794
2021	6,357
Thereafter	11,965
Total operating lease payments	$	64,614