Revenue from Contracts with Customers - Revenues Disaggregated by Geographic Market (Details) - Revenue - Geographic Concentration Risk	12 Months Ended
Dec. 29, 2021	Dec. 30, 2020	Dec. 25, 2019
Disaggregation of Revenue [Line Items]
Percentage of concentration	100.00%	100.00%	100.00%
Greater Los Angeles area market
Disaggregation of Revenue [Line Items]
Percentage of concentration	70.90%	71.30%	70.50%
Other markets
Disaggregation of Revenue [Line Items]
Percentage of concentration	29.10%	28.70%	29.50%

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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