Note 13 - Segment Information (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Net Revenues:
Thermal	$	10,724		$	10,622		$	29,534		$	33,775
EMS		3,719			4,010			9,414			13,271
	$	14,443		$	14,632		$	38,948		$	47,046
Earnings (loss) before income tax expense (benefit):
Thermal	$	478		$	496		$	39		$	1,949
EMS		169			475			(574	)		1,624
Corporate		(214	)		(177	)		(242	)		(1,617	)
	$	433		$	794		$	(777	)	$	1,956
Net earnings (loss):
Thermal	$	379		$	403		$	26		$	1,592
EMS		218			387			(380	)		1,327
Corporate		(139	)		(143	)		(161	)		(1,321	)
	$	458		$	647		$	(515	)	$	1,598

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Net revenues:
U.S.	$	5,562	$	6,226	$	16,235	$	19,319
Foreign		8,881		8,406		22,713		27,727
	$	14,443	$	14,632	$	38,948	$	47,046

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

	September 30, 2020		December 31, 2019
Property and equipment:
U.S.	$	2,088	$	2,163
Foreign		329		257
	$	2,417	$	2,420

Asset [Member]

Notes Tables

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

	September 30, 2020		December 31, 2019
Identifiable assets:
Thermal	$	51,920	$	51,621
EMS		9,940		7,319
Corporate		929		775
	$	62,789	$	59,715