SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Liquidity and subsequent events (Details) - USD ($) $ in Thousands	Dec. 25, 2024	Dec. 27, 2023
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Total amount of outstanding debt	$ 71,000
Cash available	$ 2,484	$ 7,288

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant