Note 19 - Concentrations (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

For the Three months ended March 31, 2018:
Customer		Segment		Percent
Digi-Key Electronics		Power and Electromechanical			25	%
Future Electronics		Power and Electromechanical			12	%
Total concentrations					37	%

For the Three months ended March 31, 2017:
Customer		Segment		Percent
Digi-Key Electronics		Power and Electromechanical			24	%
Total concentrations					24	%

For the Three months ended March 31, 2018:
Country		Percent
United Kingdom			15	%
Total concentrations			15	%

For the Three months ended March 31, 2017:
Country		Percent
United Kingdom			17	%
Total concentrations			17	%

As of March 31, 2018
Customer		Segment		Percent
Digi-Key Electronics		Power and Electromechanical			14	%
Total concentrations					14	%

As of December 31, 2017
Customer		Segment		Percent
GL Industrial Services UK Ltd.		Power and Electromechanical			11	%
Digi-Key Electronics		Energy			10	%
Total concentrations					21	%

As of March 31, 2018:
Country		Percent
United Kingdom			24	%

As of December 31, 2017:
Country		Percent
United Kingdom			28	%
Canada			11	%
Total concentrations			39	%