Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 29, 2019
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 424,344	$ 377,810
Franchise rights, accumulated amortization	130,001	119,288
Franchise agreements, accumulated amortization	$ 14,275	$ 13,365
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	100	100
Voting common stock, par value	$ 0.01	$ 0.01
Voting common stock, shares authorized	100,000,000	100,000,000
Voting common stock, shares issued	52,653,964	51,840,200
Common stock, shares, outstanding	50,923,686	50,496,265