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Acquired Business - Additional Information (Detail) - USD ($)
12 Months Ended
Jun. 15, 2020
Dec. 26, 2020
Purchase consideration $ 2,766,000 $ 2,766,000
Goodwill Purchase $ 2,871,000  
Income tax rate deduction 100.00%  
Business combination, recognized identifiable assets acquired and liabilities assumed, liabilities $ 200,000