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Risks and Uncertainties (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) item | Jan. 02, 2016 | Jan. 03, 2015
Risks and uncertainties |  |  |
Carrying value of cost method investment | $ 2.8 |  |
Number of Notes Receivable | item | 2 |  |
Interest rate on unsettled balances due upon demand (as a percent) | 0.00% |  |
First notes receivable |  |  |
Risks and uncertainties |  |  |
Notes receivable principal amount | $ 1.5 |  |
Second notes receivable |  |  |
Risks and uncertainties |  |  |
Notes receivable principal amount | $ 0.7 |  |
Accounts receivable | Customers | Edom Technology |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 19.00% | 17.00% |
Accounts receivable | Customers | Avnet |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 12.00% | 14.00% |
Accounts receivable | Customers | Arrow Electronics |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 13.00% | 17.00% |
Revenue | Edom Technology |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 17.00% | 20.00% | 20.00%
Revenue | Avnet |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 13.00% | 12.00% | 12.00%
Revenue | Arrow Electronics |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 11.00% |  |
Revenue | Arrow Electronics | High end of range |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) |  | 10.00% | 10.00%
Revenue | Customers | Samsung |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) |  |  | 12.00%
Revenue | Customers | Samsung | High end of range |  |  |
Risks and uncertainties |  |  |
Concentrations of credit risk (as a percent) | 10.00% | 10.00% |

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