Note 15 - Concentrations

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

15.

     CONCENTRATIONS

During

2018,

36%

of revenues were derived from

two

customers that individually had over

10%

of our total revenues: Digi-Key Electronics with

24%

and Future Electronics with

12%

in the Power and Electromechanical segment. During

2017,

36%

of revenues were derived from

two

customers that individually had over

10%

of our total revenues: Digi-Key Electronics with

26%

and Future Electronics with

10%.

During

2016,

 

19%

 of revenues were derived from 

one

 customer that individually had over

10%

of our total revenues: Digi-Key Electronics.

The Company’s major product lines in

2018,

2017

and

2016

were power and electromechanical products and natural gas infrastructure and high-tech solutions.

At

December 31, 2018,

of the gross trade accounts receivable totaling approximately

$14.6

million, there were

no

individual customers that made up greater than

10%

of the Company's total trade accounts receivable. At

December 

31,

2017,

of the gross trade accounts receivable totaling approximately

$11.0

million, approximately

21%

was due from

two

customers: GL Industrial Services UK Ltd. in the Energy segment at

11%

and Digi-Key Electronics in the Power and Electromechanical segment at

10%.

There was

one

supplier that supplied

12%

of our purchases in

2017

from a vendor in the Power and Electromechanical segment and

no

supplier concentration greater than

10%

in

2018

or

2016.

With the United Kingdom operations of Orbital, the Company also has foreign revenue and trade accounts receivable concentrations in the United Kingdom of 

16%

and

29%,

respectively for the year ended and at

December 

31,

2018.

In

2017,

the Company had foreign revenue and trade accounts receivable in the United Kingdom of

17%

and 

28%,

respectively. In

2016,

the Company had foreign revenue and trade accounts receivable in the United Kingdom of

20%

and 

27%,

respectively. Additionally, at

December 

31,

2017

the Company had accounts receivable concentrations of

11%

in Canada and at

December 

31,

2016,

the Company had accounts receivable concentrations of

11%

in China and

10%

in Italy.

Currently,

20%

of our total labor force and

55%

of our labor force in Canada is subject to a collective bargaining agreement.