Annual report [Section 13 and 15(d), not S-K Item 405]

Fair Value of Financial Instruments (Details)

v3.26.1
Fair Value of Financial Instruments (Details)
$ in Millions
 12 Months Ended
Dec. 28, 2025
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Non-cash impairment charges on property and equipment $ 6.4
Non-cash impairment charges on operating lease right-of-use-assets 0.7
Non-cash impairment charges on tradename within intangible assets $ 4.2
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] Asset Impairment Charges
Level 3 inputs | Weighted average revenue growth | Kona Grill tradename  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Measurement of intangible assets at fair value (0.018)
Level 3 inputs | Discount rate | Kona Grill tradename  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Measurement of intangible assets at fair value 0.105
Level 3 inputs | Royalty rate | Kona Grill tradename  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Measurement of intangible assets at fair value 0.015