Note 11 - Segment Information (Tables)

9 Months Ended

Sep. 30, 2013

Note 11 - Segment Information (Tables) [Line Items]

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

Identifiable assets:	Sept. 30, 2013		Dec. 31, 2012
Thermal Products	$	23,504	$	20,849
Mechanical Products		7,388		7,737
Electrical Products		4,606		3,813
	$	35,498	$	32,399

	Sept. 30, 2013		Dec. 31, 2012
Property and equipment:
U.S.	$	735	$	899
Foreign		461		351
	$	1,196	$	1,250

Nine Months [Member]

Note 11 - Segment Information (Tables) [Line Items]

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

	Three Months Ended Sept. 30,						Nine Months Ended Sept. 30,
	2013			2012			2013			2012
Net revenues from unaffiliated customers:
Thermal Products	$	5,844		$	6,037		$	17,514		$	18,651
Mechanical Products		2,193			2,677			7,784			8,267
Electrical Products		1,863			2,085			4,793			8,188
	$	9,900		$	10,799		$	30,091		$	35,106
Earnings (loss) before income tax expense (benefit):
Thermal Products	$	1,232		$	895		$	3,468		$	2,267
Mechanical Products		(346	)		(324	)		(742	)		(1,256	)
Electrical Products		294			376			493			2,115
Corporate		(66	)		65			(248	)		(191	)
	$	1,114		$	1,012		$	2,971		$	2,935
Net earnings (loss):
Thermal Products	$	1,206		$	587		$	2,847		$	1,483
Mechanical Products		(339	)		(212	)		(686	)		(797	)
Electrical Products		288			246			422			1,384
Corporate		(65	)		43			(198	)		(115	)
	$	1,090		$	664		$	2,385		$	1,955

	Three Months Ended Sept. 30,				Nine Months Ended Sept. 30,
Net revenues from unaffiliated customers:	2013		2012		2013		2012
U.S.	$	3,098	$	4,123	$	9,816	$	12,052
Foreign		6,802		6,676		20,275		23,054
	$	9,900	$	10,799	$	30,091	$	35,106