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Risks and Uncertainties (Details) $ in Millions | 12 Months Ended
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Dec. 29, 2018 USD ($) company item | Dec. 30, 2017 | Dec. 31, 2016
Risks and Uncertainties |  |  |
Number of notes receivable | item | 3 |  |
Number of privately held companies | company | 2 |  |
Notes receivable carrying value | $ 2.4 |  |
Number of equity investments | item | 2 |  |
Interest rate on unsettled balances due upon demand (as a percent) | 0.00% |  |
Equity investment, one |  |  |
Risks and Uncertainties |  |  |
Equity method investments | $ 4.1 |  |
Equity investment, two |  |  |
Risks and Uncertainties |  |  |
Equity method investments | 2.0 |  |
Impairment equity investments | $ 1.8 |  |
Accounts receivable | Customers | Arrow Electronics |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) | 12.00% | 14.00% |
Accounts receivable | Customers | Edom Technology |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) | 10.00% |  |
Accounts receivable | Customers | Edom Technology | High end of range |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) |  | 10.00% |
Accounts receivable | Customers | Avnet |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) |  | 16.00% |
Revenue | Arrow Electronics |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) | 21.00% | 12.00% | 11.00%
Revenue | Edom Technology |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) | 17.00% | 19.00% | 17.00%
Revenue | Avnet |  |  |
Risks and Uncertainties |  |  |
Concentrations of credit risk (as a percent) |  | 14.00% | 13.00%

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