Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 28, 2020	Dec. 29, 2019
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 409,333	$ 377,810
Franchise rights, accumulated amortization	126,628	119,288
Franchise agreements, accumulated amortization	$ 13,481	$ 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
Preferred stock, shares outstanding	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	52,723,814	51,840,200
Common stock, shares, outstanding	51,486,116	51,049,377