v3.26.1
Reportable Segments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Segment Reporting [Abstract]        
NumberOfReportableSegmentsNotDisclosedFlag     segments  
Segment Reporting [Line Items]        
Total revenues $ 240.9 $ 230.8 $ 466.1 $ 445.5
Gross profit 91.2 92.2 178.5 182.5
Stock based compensation (direct) (3.5) (2.8) (8.3) (6.5)
Gain (loss) on disposition of assets 0.3 0.0 2.5 0.1
Interest expense, net 22.0 17.7 43.8 35.5
Closure and impairment charges (4.0) (1.2) (4.8) (7.0)
Amortization of intangible assets (3.9) (2.7) (7.6) (5.4)
Loss on extinguishment of debt 0.0 0.9 0.0 0.9
Income before income taxes 6.0 18.9 16.1 31.7
Advertising revenues        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 71.9 73.5 143.0 144.0
Operating Segments        
Segment Reporting [Line Items]        
Total revenues 240.9 230.8 466.1 445.5
Interest expense from finance leases (0.6) (0.7) (1.2) (1.4)
Depreciation and amortization (3.8) (3.4) (7.4) (6.5)
Other segment items (73.4) (61.0) (136.0) (111.1)
Gross profit 91.2 92.2 178.5 182.5
Stock based compensation (direct) (1.1) (1.0) (2.2) (2.1)
Gain (loss) on disposition of assets 0.3 0.0 2.5 0.1
Other G&A expenses (direct and allocated) (35.3) (33.9) (69.8) (66.5)
Segment operating profit (loss) 55.1 57.3 109.0 114.1
Operating Segments | Advertising revenues        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 71.9 73.5 143.0 144.0
Operating Segments | Revenues excluding advertising revenue        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 169.0 157.3 323.1 301.5
Operating Segments | Franchise        
Segment Reporting [Line Items]        
Total revenues 166.9 174.7 331.9 340.9
Interest expense from finance leases 0.0 0.0 0.0 0.0
Depreciation and amortization (0.1) (0.2) (0.3) (0.3)
Other segment items (8.7) (12.8) (19.8) (23.3)
Gross profit 86.2 88.3 168.8 173.3
Stock based compensation (direct) (1.1) (1.0) (2.2) (2.1)
Gain (loss) on disposition of assets 0.3 0.0 2.5 0.1
Other G&A expenses (direct and allocated) (31.9) (32.0) (63.1) (63.2)
Segment operating profit (loss) 53.5 55.3 106.0 108.1
Operating Segments | Franchise | Advertising revenues        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 71.9 73.5 143.0 144.0
Operating Segments | Franchise | Revenues excluding advertising revenue        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 95.0 101.2 188.9 196.9
Operating Segments | Company-Owned Restaurants        
Segment Reporting [Line Items]        
Total revenues 47.3 28.2 80.7 49.8
Interest expense from finance leases 0.0 0.0 0.0 0.0
Depreciation and amortization (1.5) (0.8) (2.7) (1.3)
Other segment items (47.6) (30.2) (81.3) (51.6)
Gross profit (1.8) (2.7) (3.3) (3.1)
Stock based compensation (direct) 0.0 0.0 0.0 0.0
Gain (loss) on disposition of assets 0.0 0.0 0.0 0.0
Other G&A expenses (direct and allocated) (3.4) (1.9) (6.7) (3.3)
Segment operating profit (loss) (5.2) (4.6) (10.0) (6.4)
Operating Segments | Company-Owned Restaurants | Advertising revenues        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 0.0 0.0 0.0 0.0
Operating Segments | Company-Owned Restaurants | Revenues excluding advertising revenue        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 47.3 28.2 80.7 49.8
Operating Segments | Rental        
Segment Reporting [Line Items]        
Total revenues 26.7 27.8 53.5 54.8
Interest expense from finance leases (0.6) (0.7) (1.2) (1.4)
Depreciation and amortization (2.2) (2.5) (4.4) (4.9)
Other segment items (17.1) (18.1) (34.9) (36.2)
Gross profit 6.8 6.6 13.0 12.3
Stock based compensation (direct) 0.0 0.0 0.0 0.0
Gain (loss) on disposition of assets 0.0 0.0 0.0 0.0
Other G&A expenses (direct and allocated) 0.0 0.0 0.0 0.0
Segment operating profit (loss) 6.8 6.6 13.0 12.3
Operating Segments | Rental | Advertising revenues        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 0.0 0.0 0.0 0.0
Operating Segments | Rental | Revenues excluding advertising revenue        
Segment Reporting [Line Items]        
Revenues excluding advertising revenue 26.7 27.8 53.5 54.8
Segment Reporting Excluding Corporate Expenditure        
Segment Reporting [Line Items]        
Depreciation and amortization (4.2) (4.4) (8.8) (8.9)
Stock based compensation (direct) (2.4) (2.2) (5.3) (4.6)
Other G&A expenses (direct and allocated) (12.5) (9.2) (22.6) (20.1)
Interest expense, net (22.1) (17.8) (43.8) (35.5)
Closure and impairment charges (4.0) (1.2) (4.8) (7.0)
Amortization of intangible assets (3.9) (2.7) (7.6) (5.4)
Loss on extinguishment of debt   (0.9)   (0.9)
Income before income taxes $ 6.0 $ 18.9 $ 16.1 $ 31.7