13.

LEASES

The Company leases office space, storage warehouses and certain office and plant equipment under various operating leases. Minimum annual payments under these non-cancelable leases as of December 31, 2017 were as follows (in thousands):


Year Ending December 31,
2018	$	10,626
2019		9,344
2020		7,223
2021		6,716
2022		4,843
Thereafter		14,046

Total minimum lease payments	$	52,798

For the years ended December 31, 2017, 2016 and 2015, the Company recognized rental expenses of approximately $9.1 million, $9.9 million, and $7.7 million, respectively.