8. Leases

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

8. Leases

The Company leases approximately 54,000 square feet of industrial space in West Melbourne, Florida, under a non-cancellable operating lease. The original lease, which expired on June 30, 2005, was renewed for an additional five years. In December 2008 and September 2013, the Company executed the first and second amendments, respectively, to the lease, each of which reduced the amount of the monthly base rent payment. The second amendment extended the expiration date of the lease to June 30, 2020. Rental, maintenance and tax expenses for this facility were approximately $475 and $457 in 2016 and 2015, respectively. The Company also leases 8,100 square feet of office space in Lawrence, Kansas, under a non-cancellable operating lease, to accommodate a portion of the Company’s engineering team. The lease was amended on May 1, 2014 to extend the expiration date from December 31, 2014 to December 31, 2019. Rental, maintenance and tax expenses for this facility were approximately $108 and $104 in 2016 and 2015, respectively.

The following table summarizes future minimum rental payments under these leases as of December 31, 2016:

2017	$	577
2018		577
2019		577
2020		234
Thereafter		—
	$	1,965