Note 16 - Employee Benefit Plans

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Compensation and Employee Benefit Plans [Text Block]

16.

Employee Benefit Plans

The Company sponsors a

401

(k) defined contribution plan covering all employees in the United States. The Board determines contributions made by the Company annually. The Company made

no

contributions under this plan for

2018,

2017

and

2016.

The Company also sponsors a statutorily required defined contribution pension plan covering all employees in the United Kingdom. The Company made contributions to this plan of

$87,

$75

and

$85

during the years ended

December 31, 2018,

2017

and

2016,

respectively.