Industry Segments (Tables)

6 Months Ended

Jun. 30, 2012

Industry Segments [Abstract]

Financial information by industry segment

	Three Months Ended						Six Months Ended
	June 30, 2012			June 25, 2011			June 30, 2012			June 25, 2011
Net sales by segment:
Semiconductor equipment	$	48,604		$	69,628		$	92,277		$	149,071
Microwave communications		5,834			5,932			12,612			12,948
Video cameras		4,966			5,336			7,811			8,577
Total consolidated net sales and net sales for reportable segments	$	59,404		$	80,896		$	112,700		$	170,596
Segment profit (loss):
Semiconductor equipment	$	368		$	7,218		$	(1,339	)	$	16,206
Microwave communications		(988	)		(469	)		(863	)		(460	)
Video cameras		454			456			(182	)		273
Profit (loss) for reportable segments		(166	)		7,205			(2,384	)		16,019
Other unallocated amounts:
Corporate expenses		(1,899	)		(1,376	)		(3,388	)		(2,548	)
Interest and other, net		89			116			181			226
Income (loss) before income taxes	$	(1,976	)	$	5,945		$	(5,591	)	$	13,697