Note 12 - Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Net revenues:
Thermal	$	9,194		$	5,594		$	16,970		$	10,788
EMS		6,694			4,891			13,098			8,344
	$	15,888		$	10,485		$	30,068		$	19,132
Earnings (loss) before income tax expense (benefit):
Thermal	$	1,350		$	734		$	3,196		$	1,307
EMS		2,163			708			3,861			359
Corporate		(1,177	)		(693	)		(1,549	)		(793	)
	$	2,336		$	749		$	5,508		$	873
Net earnings (loss):
Thermal	$	835		$	476		$	2,045		$	849
EMS		1,338			460			2,450			233
Corporate		(728	)		(450	)		(972	)		(515	)
	$	1,445		$	486		$	3,523		$	567

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Net revenues:
U.S.	$	4,580	$	2,903	$	7,466	$	5,630
Foreign		11,308		7,582		22,602		13,502
	$	15,888	$	10,485	$	30,068	$	19,132

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

	June 30, 20 17		Dec. 31, 2016
Property and equipment:
U.S.	$	1,125	$	691
Foreign		400		253
	$	1,525	$	944

Asset [Member]

Notes Tables

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

	June 30, 2017		Dec. 31, 2016
Identifiable assets:
Thermal	$	47,218	$	19,893
EMS		9,486		22,951
	$	56,704	$	42,844