LEASE COMMITMENTS

12 Months Ended

Dec. 31, 2017

The Company leases certain buildings and equipment under operating leases. Certain lease agreements provide for renewal options, fair value purchase options, and payment of property taxes, maintenance, and insurance by the Company. Total rental expense was $7.6 million, $6.0 million, and $7.3 million for the years ended December 31, 2017, 2016, and 2015, respectively.

At December 31, 2017, future minimum rental commitments under noncancellable operating leases with initial terms in excess of one year were as follows for the years (or other periods) presented below (amounts in thousands):



2018	$	6,860
2019	4,780
2020	3,526
2021	1,900
2022	1,600
Thereafter	291
Total future minimum lease payments	$	18,957

At December 31, 2017, the Company had assets held as capital leases with a net book value of $6.9 million included in property, plant, and equipment. Total future capital lease obligations relating to these leases were as follows at December 31, 2017 for the years (or other periods) presented below (amounts in thousands):



2018	$	590
2019	197
2020	31
2021	2
Total future capital lease obligation payments	820
Less amount representing interest	(7		)
Present value of future capital lease obligation payments	$	813