v3.26.3
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 27, 2026
Mar. 29, 2026
Sep. 28, 2025
Sep. 27, 2026
Sep. 28, 2025
Dec. 28, 2025
Dec. 29, 2024
Summary Of Significant Accounting Policies [Line Items]              
Accumulated depreciation and amortization, property, plant, and equipment $ 1,400,000     $ 1,400,000   $ 1,300,000  
Accumulated amortization of software 3,500,000     3,500,000   3,100,000  
Deposit contracts, assets 1,800,000     1,800,000   1,800,000  
Impairment of long-lived assets held-for-use   $ 0   0      
Revenue, remaining performance obligation, amount 0     0   0  
Contract with customer, performance obligation satisfied in previous period       0 $ 0    
Capitalized contract cost, gross 0     0      
Accounts receivable, net of allowance for credit losses $ 13,974,000     $ 13,974,000   11,898,000 $ 17,100,000
Effective income tax rate reconciliation, percent 61.00%   23.00% (6.00%) (12.00%)    
Valuation allowance $ 1,500,000     $ 1,500,000   $ 1,500,000  
Minimum              
Summary Of Significant Accounting Policies [Line Items]              
Useful life 3 years     3 years      
Maximum              
Summary Of Significant Accounting Policies [Line Items]              
Useful life 10 years     10 years