Note 12 - Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Net Revenues:
Thermal	$	13,999		$	9,194		$	27,233		$	16,970
EMS		7,098			6,694			12,735			13,098
	$	21,097		$	15,888		$	39,968		$	30,068
Earnings (loss) before income tax expense (benefit):
Thermal	$	2,592		$	1,350		$	2,500		$	3,196
EMS		2,194			2,163			3,486			3,861
Corporate		(390	)		(1,177	)		(608	)		(1,549	)
	$	4,396		$	2,336		$	5,378		$	5,508
Net earnings (loss):
Thermal	$	2,415		$	835		$	1,960		$	2,045
EMS		1,945			1,338			2,950			2,450
Corporate		(346	)		(728	)		(515	)		(972	)
	$	4,014		$	1,445		$	4,395		$	3,523

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Net revenues:
U.S.	$	6,818	$	4,580	$	13,361	$	7,466
Foreign		14,279		11,308		26,607		22,602
	$	21,097	$	15,888	$	39,968	$	30,068

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

	June 30, 2018		December 31, 2017
Property and equipment:
U.S.	$	2,571	$	991
Foreign		370		550
	$	2,941	$	1,541

Asset [Member]

Notes Tables

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

	June 30, 2018		December 31, 2017
Identifiable assets:
Thermal	$	52,156	$	50,408
EMS		9,881		12,085
	$	62,037	$	62,493