Note 9 - Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Note 9 - Segment Information (Tables) [Line Items]

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

	Three Months Ended June 30,						Six Months Ended June 30,
Net revenues from unaffiliated customers:	2014			2013			2014			2013
Thermal Products	$	6,116		$	5,772		$	11,359		$	11,670
Mechanical Products		4,137			3,798			6,184			5,591
Electrical Products		2,090			1,648			3,597			2,930
	$	12,343		$	11,218		$	21,140		$	20,191
Earnings (loss) before income tax expense (benefit):
Thermal Products	$	1,207		$	1,078		$	2,018		$	2,236
Mechanical Products		637			290			354			(396	)
Electrical Products		400			207			405			199
Corporate		(190	)		(88	)		(312	)		(182	)
	$	2,054		$	1,487		$	2,465		$	1,857
Net earnings (loss):
Thermal Products	$	797		$	727		$	1,361		$	1,641
Mechanical Products		421			196			224			(346	)
Electrical Products		264			140			268			134
Corporate		(125	)		(59	)		(210	)		(133	)
	$	1,357		$	1,003		$	1,643		$	1,295

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net revenues from unaffiliated customers:
U.S.	$	3,723	$	3,504	$	6,872	$	6,718
Foreign		8,620		7,714		14,268		13,473
	$	12,343	$	11,218	$	21,140	$	20,191

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

	June 30, 2014		Dec. 31, 2013
Long-lived assets:
U.S.	$	693	$	700
Foreign		637		554
	$	1,330	$	1,254

Asset [Member]

Note 9 - Segment Information (Tables) [Line Items]

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

	June 30, 2014		Dec. 31, 2013
Identifiable assets:
Thermal Products	$	25,410	$	23,934
Mechanical Products		7,866		7,093
Electrical Products		5,119		4,454
	$	38,395	$	35,481