GEOGRAPHIC INFORMATION, PRODUCT GROUPS AND CUSTOMER CONCENTRATION INFORMATION - Revenues by Product Group (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Segment Information [Line Items]
Revenues	$ 83,023	$ 95,398	$ 259,084	$ 294,960
100 Gb/s transmission
Segment Information [Line Items]
Revenues	30,221	18,989	85,221	54,293
40 Gb/s transmission
Segment Information [Line Items]
Revenues	18,962	25,156	60,428	74,410
10 Gb/s and lower transmission
Segment Information [Line Items]
Revenues	33,840	43,675	104,071	144,077
Industrial and consumer
Segment Information [Line Items]
Revenues	$ 0	$ 7,578	$ 9,364	$ 22,180