Note 11 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

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

	Three Months Ended March 31,
	2019			201 8
Net Revenues:
Thermal	$	12,634		$	13,234
EMS		5,428			5,637
	$	18,062		$	18,871
Earnings (loss) before income tax expense (benefit):
Thermal	$	1,144		$	(92	)
EMS		1,047			1,292
Corporate		(729	)		(218	)
	$	1,462		$	982
Net earnings (loss):
Thermal	$	891		$	(455	)
EMS		815			1,005
Corporate		(568	)		(169	)
	$	1,138		$	381

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

	Three Months Ended March 31,
	201 9		201 8
Net revenues:
U.S.	$	6,810	$	6,543
Foreign		11,252		12,328
	$	18,062	$	18,871

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

	March 31, 201 9		December 31, 201 8
Property and equipment:
U.S.	$	2,281	$	2,327
Foreign		339		390
	$	2,620	$	2,717

Asset [Member]

Notes Tables

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

	March 31, 201 9		December 31, 201 8
Identifiable assets:
Thermal	$	50,790	$	55,343
EMS		9,020		6,692
Corporate		1,632		5,152
	$	61,442	$	67,187