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Basis of Presentation - Additional Information (Details) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 01, 2015 | Jul. 01, 2017 | Jul. 02, 2016 | Jun. 27, 2015 | Mar. 03, 2017
Lumentum Separation |  |  |  |  |
Percentage of outstanding shares distributed | 80.10% |  |  |  |
Stock conversion ratio in distribution | 0.2 |  |  |  |
Restricted Cash |  |  |  |  |
Restricted cash |  | $ 11.2 | $ 12.2 |  |
Long-term restricted cash balances |  | 6.8 | 6.0 |  |
Advertising Expense |  |  |  |  |
Advertising cost during the period |  | $ 2.1 | $ 2.6 | $ 1.7 |
Customer A - OSP customer | Customer Concentration Risk | Accounts receivable, net |  |  |  |  |
Concentration of Credit and Other Risks |  |  |  |  |
Concentration risk percentage, more than |  | 10.00% | 10.00% |  |
Lumentum |  |  |  |  |
Lumentum Separation |  |  |  |  |
Percentage of outstanding shares distributed | 80.10% |  |  |  |
Ownership percentage | 19.90% |  |  |  |
Building and improvements | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 10 years |  |  |
Building and improvements | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 50 years |  |  |
Machinery and equipment | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 2 years |  |  |
Machinery and equipment | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 20 years |  |  |
Furniture and fixtures | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 2 years |  |  |
Furniture and fixtures | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 5 years |  |  |
Software | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 2 years |  |  |
Software | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 5 years |  |  |
Office equipment | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 2 years |  |  |
Office equipment | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 5 years |  |  |
Demonstration units | Minimum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 3 years |  |  |
Demonstration units | Maximum |  |  |  |  |
Property, Plant and Equipment |  |  |  |  |
Estimated useful lives |  | 5 years |  |  |
Convertible Debt | 0.625% Senior Convertible Notes |  |  |  |  |
Fair Value of Financial Instruments |  |  |  |  |
Interest rate on senior convertible notes |  | 0.625% |  |  |
Convertible Debt | 1.00% Senior Convertible Notes |  |  |  |  |
Fair Value of Financial Instruments |  |  |  |  |
Interest rate on senior convertible notes |  | 1.00% |  |  | 1.00%

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