Note 9 - Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

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,
	2015			2014			2015			2014
Net revenues:
Thermal Products	$	6,659		$	6,116		$	12,376		$	11,359
Mechanical Products		2,487			4,137			4,922			6,184
Electrical Products		2,413			2,090			4,449			3,597
	$	11,559		$	12,343		$	21,747		$	21,140
Earnings (loss) before income tax expense (benefit):
Thermal Products	$	1,537		$	1,207		$	2,566		$	2,018
Mechanical Products		(196	)		637			(481	)		354
Electrical Products		477			400			796			405
Corporate		(159	)		(190	)		(551	)		(312	)
	$	1,659		$	2,054		$	2,330		$	2,465
Net earnings (loss):
Thermal Products	$	1,001		$	797		$	1,673		$	1,361
Mechanical Products		(128	)		421			(314	)		224
Electrical Products		311			264			519			268
Corporate		(104	)		(125	)		(360	)		(210	)
	$	1,080		$	1,357		$	1,518		$	1,643

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Net revenues:
U.S.	$	3,830	$	3,723	$	7,319	$	6,872
Foreign		7,729		8,620		14,428		14,268
	$	11,559	$	12,343	$	21,747	$	21,140

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

	June 30, 2015		Dec. 31, 2014
Property and equipment:
U.S.	$	817	$	621
Foreign		374		647
	$	1,191	$	1,268

Asset [Member]

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

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

	June 30, 2015		Dec. 31, 2014
Identifiable assets:
Thermal Products	$	16,631	$	26,211
Mechanical Products		20,472		7,801
Electrical Products		3,969		4,726
	$	41,072	$	38,738