Quarterly report pursuant to Section 13 or 15(d)

Line of Credit - Additional Information (Detail)

v3.21.2
Line of Credit - Additional Information (Detail) - Revolving Credit Facility [Member] - USD ($)
6 Months Ended 12 Months Ended
Feb. 12, 2018
Jun. 26, 2021
Dec. 26, 2020
Line of Credit Facility [Line Items]      
Line of credit facility, Maximum borrowing capacity $ 50,000,000    
Line of credit facility, Interest rate description The interest rate on the facility is based on a base rate, unless a LIBOR Rate option is chosen by the Company. If the LIBOR Rate is elected, the interest computation is equal to the LIBOR Rate plus the LIBOR Rate Margin. If the Base Rate is elected, the interest computation is equal to the Base Rate plus the Base Rate Margin    
Line of credit facility, Interest rate during period   3.50% 3.50%
Line of credit facility, Collateral   The line of credit is collateralized by accounts receivable and inventories.  
Deferred loan costs   $ 1,058,000  
Line of credit facility, Expiration date   Feb. 12, 2023  
Unamortized portion of deferred loan costs   $ 342,000 $ 448,000
Line of credit facility, Outstanding amount   $ 0 $ 0