For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Segment Reporting and Geographic Information - Schedule of Revenue by Major Customer by Reporting Segments (Details) - Customer Concentration Risk [Member] - Sales [Member]	12 Months Ended
	Dec. 26, 2020	Dec. 31, 2019	Dec. 31, 2018
Samsung Semiconductor [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage	15.00%
Taiwan Semiconductor Manufacturing Co. Ltd. [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage	14.00%	13.00%
SK Hynix Inc. [Member]
Concentration Risk [Line Items]
Customer concentration risk percentage		13.00%	12.00%