Annual report pursuant to Section 13 and 15(d)

Franchise Operations (Details)

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Franchise Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 27, 2015
Dec. 28, 2014
Dec. 29, 2013
Franchise royalties and fees:      
Royalty income $ 12,478 $ 13,540 $ 14,315
Franchise fees 48 97 63
Total franchise royalties and fees $ 12,526 $ 13,637 $ 14,378
Minimum      
Franchise royalties and fees:      
Royalties as a percentage of franchised adjusted gross restaurant sales 3.00%    
Maximum      
Franchise royalties and fees:      
Royalties as a percentage of franchised adjusted gross restaurant sales 4.00%