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

Summary of Significant Accounting Policies - Consolidated Statement of Operations (Details)

v3.26.1
Summary of Significant Accounting Policies - Consolidated Statement of Operations (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 28, 2025
Dec. 31, 2024
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Owned restaurant operating expenses $ 503,070 $ 413,587
Total owned operating expenses 666,649 552,381
General and administrative 52,540 44,234
Pre-opening expenses 5,741 9,509
Total costs and expenses 797,721 664,447
Operating Income 8,001 8,897
Loss before benefit for income taxes (32,901) (26,361)
Provision (benefit) for income taxes 60,684 (8,434)
Net loss (93,585) (17,927)
Net loss attributable to The ONE Group Hospitality, Inc. (92,241) (17,098)
Net loss attributable to common stockholders $ (125,459) $ (36,240)
Net loss available to common stockholders per share - Basic $ (4.05) $ (1.16)
Net loss available to common stockholders per share - Diluted $ (4.05) $ (1.16)
Previously Reported    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Owned restaurant operating expenses   $ 411,798
Total owned operating expenses   550,592
General and administrative   44,170
Pre-opening expenses   9,488
Total costs and expenses   662,573
Operating Income   10,771
Loss before benefit for income taxes   (24,487)
Provision (benefit) for income taxes   (7,834)
Net loss   (16,653)
Net loss attributable to The ONE Group Hospitality, Inc.   (15,824)
Net loss attributable to common stockholders   $ (34,966)
Net loss available to common stockholders per share - Basic   $ (1.12)
Net loss available to common stockholders per share - Diluted   $ (1.12)
Adjustment    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Owned restaurant operating expenses   $ 1,789
Total owned operating expenses   1,789
General and administrative   64
Pre-opening expenses   21
Total costs and expenses   1,874
Operating Income   (1,874)
Loss before benefit for income taxes   (1,874)
Provision (benefit) for income taxes   (600)
Net loss   (1,274)
Net loss attributable to The ONE Group Hospitality, Inc.   (1,274)
Net loss attributable to common stockholders   $ (1,274)
Net loss available to common stockholders per share - Basic   $ (0.04)
Net loss available to common stockholders per share - Diluted   $ (0.04)