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Note 12 - Segment Data (Tables)

9 Months Ended

Sep. 28, 2014

Segment Reporting [Abstract]

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 28,				September 29,				September 28,				September 29,
		2014				2013				2014				2013
		(Unaudited)								(Unaudited)
Net revenue from unaffiliated customers:
Industrial Group		$	82,555			$	66,650			$	242,104			$	212,231
Electronics Group			7,649				9,628				25,457				24,624
		$	90,204			$	76,278			$	267,561			$	236,855
Gross profit (loss):
Industrial Group		$	9,299			$	7,417			$	31,836			$	24,385
Electronics Group			(1,090	)			(156	)			(2,236	)			(712	)
		$	8,209			$	7,261			$	29,600			$	23,673
Operating income (loss):
Industrial Group		$	5,373			$	4,628			$	20,526			$	15,989
Electronics Group			(3,645	)			(3,521	)			(9,890	)			(18,116	)
General, corporate and other			(1,908	)			(2,082	)			(6,719	)			(6,418	)
		$	(180	)		$	(975	)		$	3,917			$	(8,545	)

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

		September 28,				December 31,
		2014				2013
		(Unaudited)
Total assets:
Industrial Group		$	119,396			$	100,593
Electronics Group			30,509				29,689
General, corporate and other			17,932				16,001
		$	167,837			$	146,283