Note 12 - Segment Information (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Net Revenues:
Thermal	$	11,470		$	6,641		$	28,440		$	17,429
EMS		5,882			4,182			18,980			12,526
	$	17,352		$	10,823		$	47,420		$	29,955
Earnings (loss) before income tax expense (benefit):
Thermal	$	1,539		$	1,402		$	4,735		$	2,709
EMS		1,594			374			5,455			733
Corporate		(292	)		(55	)		(1,841	)		(848	)
	$	2,841		$	1,721		$	8,349		$	2,594
Net earnings (loss):
Thermal	$	1,183		$	888		$	3,228		$	1,737
EMS		1,021			236			3,471			469
Corporate		(186	)		(34	)		(1,158	)		(549	)
	$	2,018		$	1,090		$	5,541		$	1,657

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Net revenues:
U.S.	$	4,746	$	3,268	$	12,212	$	8,898
Foreign		12,606		7,555		35,208		21,057
	$	17,352	$	10,823	$	47,420	$	29,955

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

	September 30, 2017		December 31, 2016
Property and equipment:
U.S.	$	1,003	$	691
Foreign		541		253
	$	1,544	$	944

Asset [Member]

Notes Tables

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

	September 30, 2017		December 31, 2016
Identifiable assets:
Thermal	$	49,443	$	19,893
EMS		10,771		22,951
	$	60,214	$	42,844