Note 9 - Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Contingencies Disclosure [Text Block]

9. Commitments and Contingencies

We lease certain of our facilities and equipment under non-cancelable operating leases. Rental expense was

$4.4

 million in

2016

and

$1.8

 million in both

2015

and

2014.

The increase in rent expense in

2016

was a result of the sale lease-back of our headquarters facility on

December

4,

2015.

See Note

13,

“Sale-leaseback of Poway Facility” for additional information.

Future minimum lease payments at

December

31,

2016

are as follows:

(in thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Non-cancelable operating leases	$	3,051	$	2,527	$	2,237	$	2,259	$	2,299	$	8,695	$	21,068

From time-to-time we are involved in various legal proceedings, examinations by various tax authorities and claims that have arisen in the ordinary course of our business. The outcome of any litigation is inherently uncertain. While there can be no assurance, at the present time we do not believe that the resolution of the matters described above will have a material adverse effect on our assets, financial position or results of operations.