COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions		1 Months Ended	9 Months Ended
	Nov. 23, 2016 patent	Oct. 31, 2015 installment	Apr. 01, 2017 USD ($)	Jul. 02, 2016 USD ($)
Contingencies And Commitments [Line Items]
Capital lease term		5 years
Number of capital lease installment payments | installment		20
Interest rate on capital lease (percent)		1.15%
Malaysian goods and services tax refund claim | $			$ 2.4
Prepaid Expenses and Other Current Assets
Contingencies And Commitments [Line Items]
Malaysian goods and services tax refund claim | $			1.9
Inventory in Excess of Future Demand Forecasts | Accrued Expenses and Other Liabilities
Contingencies And Commitments [Line Items]
Purchase commitments | $			$ 4.5	$ 1.7
Minimum
Contingencies And Commitments [Line Items]
Warranty for products from date of sale			12 months
Maximum
Contingencies And Commitments [Line Items]
Warranty for products from date of sale			36 months
Oyster Optics Litigation
Contingencies And Commitments [Line Items]
Number of patents allegedly infringed | patent	7
Oyster Optics Litigation, Cisco 40G Optical Platform
Contingencies And Commitments [Line Items]
Number of patents allegedly infringed | patent	4
Oyster Optics Litigation, Cisco 100G Optical Platform
Contingencies And Commitments [Line Items]
Number of patents allegedly infringed | patent	3