Note 10 - Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

(in thousands)	Power and Electro- Mechanical		Energy			Other			Total
Revenues from external customers	$	17,551	$	5,458		$	—		$	23,009
Depreciation and amortization (1)		345		400			—			745
Interest expense		10		9			66			85
Profit (loss) from operations		1,076		(2,585	)		(1,581	)		(3,090	)
Segment assets		53,659		20,565			1,537			75,761
Other intangible assets, net		8,337		5,139			—			13,476
Goodwill		13,089		—			—			13,089
Expenditures for long-lived assets (2)		161		57			—			218

(in thousands)	Power and Electro- Mechanical		Energy			Other			Total
Revenues from external customers	$	17,020	$	4,946		$	—		$	21,966
Depreciation and amortization (1)		364		366			—			730
Interest expense		53		2			59			114
Profit (loss) from operations		9		(2,524	)		(1,264	)		(3,779	)
Segment assets		45,401		29,645			8,879			83,925
Other intangibles assets, net		8,906		6,702			—			15,608
Goodwill		13,097		4,723			—			17,820
Expenditures for segment assets (2)		320		73			—			393

Revenue from External Customers by Geographic Areas [Table Text Block]

(dollars in thousands)	For the Three Months Ended March 31,
	2019					2018
	Amount		%			Amount		%
USA	$	14,328		62	%	$	13,807		63	%
United Kingdom		3,458		15	%		3,360		15	%
All Others		5,223		23	%		4,799		22	%
Total	$	23,009		100	%	$	21,966		100	%