Note 8 - Share Option and Equity Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

	Three months ended September 30 ,				Nine m onths e nded September 30 ,
(in thousands)	201 8		201 7		2018		2017
Cost of revenue	$	38	$	42	$	161	$	125
Research and development		201		180		581		461
Sales and marketing		137		484		774		1,327
General and administrative		572		746		2,034		2,216
Total continuing operations		948		1,452		3,550		4,129
Discontinued operations		67		54		211		137
Total share-based compensation	$	1,015	$	1,506	$	3,761	$	4,266