COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions	1 Months Ended	3 Months Ended
	Oct. 31, 2015 installment	Oct. 01, 2016 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%
Prepaid Expenses and Other Current Assets
Contingencies And Commitments [Line Items]
Malaysian goods and services tax refund claim		$ 2.4
Inventory in Excess of Future Demand Forecasts | Accrued Expenses and Other Liabilities
Contingencies And Commitments [Line Items]
Purchase commitments		$ 1.3	$ 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
Opnext | Minimum
Contingencies And Commitments [Line Items]
Capital lease term		1 year
Opnext | Maximum
Contingencies And Commitments [Line Items]
Capital lease term		5 years