Note 12 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	Three Months Ended March 31,
	20 20			201 9
Net Revenues:
Thermal	$	9,334		$	12,634
EMS		1,896			5,428
	$	11,230		$	18,062
Earnings (loss) before income tax expense (benefit):
Thermal	$	(426	)	$	1,144
EMS		(1,004	)		1,047
Corporate		37			(729	)
	$	(1,393	)	$	1,462
Net earnings (loss):
Thermal	$	(350	)	$	891
EMS		(824	)		815
Corporate		31			(568	)
	$	(1,143	)	$	1,138

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

	Three Months Ended March 31,
	20 20		201 9
Net revenues:
U.S.	$	5,719	$	6,810
Foreign		5,511		11,252
	$	11,230	$	18,062

Long-lived Assets by Geographic Areas [Table Text Block]

	March 31, 20 20		December 31, 201 9
Property and equipment:
U.S.	$	2,062	$	2,163
Foreign		279		257
	$	2,341	$	2,420

Asset [Member]

Notes Tables

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

	March 31, 20 20		December 31, 201 9
Identifiable assets:
Thermal	$	51,223	$	51,621
EMS		7,076		7,319
Corporate		760		775
	$	59,059	$	59,715