Revenue Recognition - Transaction Price Allocated to Remaining Performance Obligations (Details) - USD ($) $ in Thousands	Dec. 27, 2020	Dec. 29, 2019
Performance Obligations by Period
Total deferred revenue	$ 33,254	$ 32,395
Franchise royalties and fees
Performance Obligations by Period
Less than 1 Year	2,288
1-2 Years	2,090
2-3 Years	1,822
3-4 Years	1,591
4-5 Years	1,352
Thereafter	2,857
Total deferred revenue	12,000
Area development fees
Performance Obligations by Period
Total deferred revenue	1,500
Gift Card
Performance Obligations by Period
Total deferred revenue	$ 6,400