Business Segment Information - Segment Revenue, Gross Profit and Operating Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jul. 03, 2011
Segment Reporting Information [Line Items]
Net revenue	$ 210,990	$ 237,716	$ 208,146
Cost of sales	118,090	133,704	118,414
Gross profit	92,900	104,012	89,732
Operating expenses	98,245	87,168	82,601
Operating income (loss)	(5,345)	16,844	7,131
Operating Segments [Member] | Communications [Member]
Segment Reporting Information [Line Items]
Net revenue	116,047	132,345	119,104
Cost of sales	56,166	65,781	60,112
Gross profit	59,881	66,564	58,992
Operating expenses	36,612	37,867	36,302
Operating income (loss)	23,269	28,697	22,690
Operating Segments [Member] | Government and Enterprise [Member]
Segment Reporting Information [Line Items]
Net revenue	94,943	105,371	89,042
Cost of sales	60,981	66,745	48,951
Gross profit	33,962	38,626	40,091
Operating expenses	27,922	27,001	24,251
Operating income (loss)	6,040	11,625	15,840
Corporate, Non-Segment [Member] | Corporate [Member]
Segment Reporting Information [Line Items]
Net revenue
Cost of sales	943	1,178	9,351
Gross profit	(943)	(1,178)	(9,351)
Operating expenses	33,711	22,300	22,048
Operating income (loss)	$ (34,654)	$ (23,478)	$ (31,399)