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% |  |  |

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