7. Leases

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

7. Leases

The Company leases approximately 54,000 square feet (not in thousands) of industrial space in West Melbourne, Florida, under a non-cancellable operating lease. The lease has the expiration date of June 30, 2027. Rental, maintenance and tax expenses for this facility were approximately $490 and $472 in 2018 and 2017, respectively. The Company also leases 8,100 square feet (not in thousands) of office space in Lawrence, Kansas, under a non-cancellable operating lease, to accommodate a portion of the Company’s engineering team. The lease has the expiration date of December 31, 2019. Rental, maintenance and tax expenses for this facility were approximately $108 in 2018 and 2017.

The following table summarizes future minimum rental payments under these leases as of December 31, 2018:

2019	$	619
2020		543
2021		575
Thereafter		564
	$	2,301