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Concentration of Credit and Other Risks
 9 Months Ended
Sep. 26, 2020
Risks and Uncertainties [Abstract]  
Concentration of Credit and Other Risks Concentration of Credit and Other Risks
Each of the following customers accounted for 10% or more of our revenues for the periods indicated:
Three Months EndedNine Months Ended
September 26,
2020		September 28,
2019		September 26,
2020		September 28,
2019
Intel Corporation25.6 %23.9 %32.4 %23.8 %
Taiwan Semiconductor Manufacturing Co.,LTD.10.6 %***
Samsung Electronics., LTD.10.6 %**10.0 %
Micron Technology, Inc.10.1 %11.9 %**
SK Hynix Inc.*13.5 %*10.6 %
56.9 %49.3 %32.4 %44.4 %
*Represents less than 10% of total revenues.
At September 26, 2020, two customers accounted for 26.6% and 18.3% of gross accounts receivable, respectively. At December 28, 2019, three customers accounted for 25.7%, 15.1% and 11.5% of gross accounts receivable, respectively.