v3.21.1
NATURE OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Apr. 30, 2020
USD ($)
subsidiary
Mar. 16, 2020
restaurant
Mar. 09, 2020
restaurant
Jul. 18, 2018
Oct. 25, 2020
restaurant
Sep. 27, 2020
USD ($)
May 24, 2020
USD ($)
subsidiary
Dec. 29, 2019
USD ($)
Jan. 03, 2021
USD ($)
state
restaurant
Jan. 03, 2021
USD ($)
state
restaurant
$ / shares
shares
Dec. 29, 2019
USD ($)
$ / shares
shares
Business information                      
Duration of a fiscal reporting year                   371 days 364 days
Number of restaurants | restaurant                 125 125  
Number of states in which entity operates | state                 31 31  
Restricted cash               $ 761,000 $ 1,502,000 $ 1,502,000 $ 761,000
Accounts receivable, net               4,379,000 4,823,000 4,823,000 4,379,000
Advertising expense                   2,700,000 2,800,000
Research and development expense                   473,000 489,000
Pre-opening expenses                   10,000 460,000
Cash and Cash Equivalents, at Carrying Value [Abstract]                      
Certificate of deposit             $ 3,500,000        
CD interest rate             3.00%        
CD Annual percentage yield             3.04%        
Frequency of compounding interest on a CD             30 days        
Restricted cash and marketing fund                      
Restricted Cash And Cash Equivalents               761,000 1,502,000 1,502,000 761,000
Accounts receivable, net                      
Bad debt expense                   567,000 239,000
Reserve for bad debt               132,000 277,000 277,000 132,000
Assets held for sale                      
Assets held for sale               $ 2,842,000 1,070,000 1,070,000 2,842,000
Contract sale price for assets held for sale                 2,500,000 2,500,000  
Gain on sale of property                   1,810,000 74,000
Principal payments           $ 3,500,000          
Goodwill                      
Goodwill impairment                   0 0
Net income (loss) per common share                      
Net income (loss) attributable to shareholders                   $ 4,947,000 $ (649,000)
Weighted average shares outstanding - basic | shares                   9,155,000 9,099,000
Basic net (loss) income per share | $ / shares                   $ 0.54 $ (0.07)
Weighted average shares outstanding - diluted | shares                   9,168,000 9,099,000
Diluted net (loss) income per share | $ / shares                   $ 0.54 $ (0.07)
Anti-dilutive shares excluded from computation of diluted net income per share | shares                   271,176 191,000
Buildings                      
Property, equipment and leasehold improvements                      
Useful lives                   30 years  
Software                      
Property, equipment and leasehold improvements                      
Useful lives                   5 years  
Decor                      
Property, equipment and leasehold improvements                      
Useful lives                   7 years  
Minimum                      
Business information                      
Duration of a fiscal reporting year                   364 days  
Minimum | Furniture, Fixtures, Equipment and Software                      
Property, equipment and leasehold improvements                      
Useful lives                   3 years  
Minimum | Leasehold Improvements                      
Property, equipment and leasehold improvements                      
Useful lives                   0 years  
Minimum | Restaurant Signage                      
Property, equipment and leasehold improvements                      
Useful lives                   10 years  
Maximum                      
Business information                      
Duration of a fiscal reporting year                   371 days  
Cash and Cash Equivalents, at Carrying Value [Abstract]                      
FDIC insured cash amount per account                 250,000 $ 250,000  
Maximum | Furniture, Fixtures, Equipment and Software                      
Property, equipment and leasehold improvements                      
Useful lives                   7 years  
Maximum | Leasehold Improvements                      
Property, equipment and leasehold improvements                      
Useful lives                   30 years  
Maximum | Restaurant Signage                      
Property, equipment and leasehold improvements                      
Useful lives                   15 years  
Coon Rapids, MN property                      
Assets held for sale                      
Assets held for sale           2,700,000          
Gross sale price           3,600,000          
Gain on sale of property           $ 937,000          
Colorado Springs, CO                      
Goodwill                      
Goodwill write-off due to closure                   $ 39,000  
PPP Loans                      
Business information                      
Number of subsidiaries receiving PPP loans | subsidiary 2           2        
Loan amount $ 13,000,000.0           $ 921,000   $ 13,900,000 13,900,000  
Bluestone Hospitality Group                      
Business information                      
Number of restaurant units to be developed pursuant to a development agreement | restaurant         25            
COVID-19                      
Accounts receivable, net                      
Bad debt expense                   $ 403,000  
COVID-19 | Minimum                      
Business information                      
Percentage of dine-in capacity allowed upon reopening per government mandates as a result of COVID-19             25.00%        
COVID-19 | Maximum                      
Business information                      
Percentage of dine-in capacity allowed upon reopening per government mandates as a result of COVID-19             50.00%        
Franchised Units                      
Business information                      
Number of restaurants | restaurant                 98 98  
Entity Operated Units                      
Business information                      
Number of restaurants | restaurant                 27 27  
Real Urban Barbecue Restaurant                      
Business information                      
Number of restaurants acquired | restaurant   1                  
Granite City Food & Brewery Restaurants                      
Business information                      
Number of restaurants acquired | restaurant     18                
Term Loan                      
Assets held for sale                      
Principal payments                 $ 3,500,000    
Mercury                      
Business information                      
Ownership percentage       20.00%       20.00%