Leases

The Company leases certain office space and equipment under operating leases. As operating leases expire, it is expected that they will be replaced with similar leases. Future minimum lease payments under these leases are shown below:



2018	$	5,277
2019	4,337
2020	3,628
2021	2,002
2022	1,649
2023 and thereafter	4,857
Total minimum lease payments	$	21,750

Total rental expense incurred by the Company for the years ended December 31, 2017, 2016, and 2015 was $5.7 million, $6.0 million, and $5.5 million, respectively.