Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 28, 2013	Dec. 29, 2012
Statements Of Operations [Abstract]
Net revenues	$ 32,040	$ 30,433	$ 64,648	$ 67,182
Cost of revenues	19,820	19,239	39,620	42,077
Gross profit	12,220	11,194	25,028	25,105
Operating expenses:
Research and development	5,274	5,097	10,319	10,420
Selling, general and administrative	7,126	7,532	14,813	15,171
Total operating expenses	12,400	12,629	25,132	25,591
Loss from operations	(180)	(1,435)	(104)	(486)
Interest and other income, net	1,047	795	1,533	1,430
Income (loss) before income taxes	867	(640)	1,429	944
Income tax expense (benefit)	(331)	4,756	(100)	5,256
Net income (loss) from consolidated companies	1,198	(5,396)	1,529	(4,312)
Equity in net income of unconsolidated affiliates	27	57	70	165
Net income (loss)	$ 1,225	$ (5,339)	$ 1,599	$ (4,147)
Basic income (loss) per share	$ 0.05	$ (0.23)	$ 0.07	$ (0.18)
Diluted income (loss) per share	$ 0.05	$ (0.23)	$ 0.07	$ (0.18)
Shares used in computing basic income (loss) per share	22,800	23,515	22,797	23,529
Shares used in computing diluted income (loss) per share	23,019	23,515	22,985	23,529